UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                 SCHEDULE 13D

                   Under the Securities Exchange Act of 1934
                              (Amendment No. 4)*

                         CB RICHARD ELLIS GROUP, INC.
                  ------------------------------------------
                               (Name of Issuer)

                      CLASS A COMMON STOCK, $0.01 par value
                      -------------------------------------
                         (Title of Class of Securities)

                                  12497T101
                                  ---------
                               (CUSIP Number)

                              Gregory D. Hitchan
                          Blum Capital Partners, L.P.
                        909 Montgomery Street, Suite 400
                            San Francisco, CA 94133
                                (415) 434-1111
                             -------------------
               (Name, Address and Telephone Number of Person
              Authorized to Receive Notices and Communications)

                                 May 9, 2006
                              -----------------
           (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(b)(3) or (4), check the
following box [ ].

*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).
                                Page 1 of 13

 CUSIP NO. 12497T101            SCHEDULE 13D                     Page 2 of 13

-----------------------------------------------------------------------------
1.  NAME OF REPORTING PERSON                        BLUM STRATEGIC GP, L.L.C.

   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON               94-3303831
-----------------------------------------------------------------------------
2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                (a) [x]
                                                                     (b) [x]
-----------------------------------------------------------------------------
3.  SEC USE ONLY

-----------------------------------------------------------------------------
4.  SOURCE OF FUNDS*                                              See Item 3

-----------------------------------------------------------------------------
5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) or 2(e)                                       [ ]
-----------------------------------------------------------------------------
6.  CITIZENSHIP OR PLACE OF ORGANIZATION                            Delaware

-----------------------------------------------------------------------------
  7.  SOLE VOTING POWER                                 -0-

   NUMBER OF      -----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER                      8,177,565**
   BENEFICIALLY
   OWNED BY EACH  -----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER                            -0-

                  -----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER                 8,177,565**

-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,177,565**

-----------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES                                                       [ ]
-----------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)               11.0%**

-----------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON                  OO (Limited Liability Company)

-----------------------------------------------------------------------------
** See Item 5 below

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP NO. 12497T101              SCHEDULE 13D                    Page 3 of 13

-----------------------------------------------------------------------------
1.  NAME OF REPORTING PERSON                    BLUM STRATEGIC PARTNERS, L.P.


   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON               94-3303833
-----------------------------------------------------------------------------
2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                 (a) [x]
                                                                      (b) [x]
-----------------------------------------------------------------------------
3.  SEC USE ONLY

-----------------------------------------------------------------------------
4.  SOURCE OF FUNDS*                                               See Item 3

-----------------------------------------------------------------------------
5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) or 2(e)                                       [ ]
-----------------------------------------------------------------------------
6.  CITIZENSHIP OR PLACE OF ORGANIZATION                             Delaware

-----------------------------------------------------------------------------
                   7.  SOLE VOTING POWER                                 -0-
   NUMBER OF      -----------------------------------------------------------
   SHARES          8.  SHARED VOTING POWER                       8,177,565**
   BENEFICIALLY
   OWNED BY EACH
   PERSON WITH     ----------------------------------------------------------
                   9.  SOLE DISPOSITIVE POWER                            -0-

                  -----------------------------------------------------------
                  10.  SHARED DISPOSITIVE POWER                  8,177,565**

-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,177,565**

-----------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES                                                       [ ]
-----------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)               11.0%**

-----------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON                                              PN

-----------------------------------------------------------------------------
**  See Item 5 below

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!




CUSIP NO. 12497T101              SCHEDULE 13D                    Page 4 of 13

-----------------------------------------------------------------------------
 1.  NAME OF REPORTING PERSON                    BLUM STRATEGIC GP II, L.L.C.

    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON              94-3395150
-----------------------------------------------------------------------------
 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                (a) [x]
                                                                      (b) [x]
-----------------------------------------------------------------------------
 3.  SEC USE ONLY

-----------------------------------------------------------------------------
 4.  SOURCE OF FUNDS*                                              See Item 3

-----------------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) or 2(e)                                       [ ]
-----------------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION                            Delaware

-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER                                 -0-

   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER                      8,177,565**
   BENEFICIALLY
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER                            -0-

                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER                 8,177,565**

-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,177,565**

-----------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES                                                       [ ]
-----------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)               11.0%**

-----------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON                  OO (Limited Liability Company)

-----------------------------------------------------------------------------
** See Item 5 below

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP NO. 12497T101             SCHEDULE 13D                     Page 5 of 13

-----------------------------------------------------------------------------
1.  NAME OF REPORTING PERSON                BLUM STRATEGIC PARTNERS II, L.P.

    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON              94-3395151
-----------------------------------------------------------------------------
2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                (a) [x]
                                                                     (b) [x]
-----------------------------------------------------------------------------
3.  SEC USE ONLY

-----------------------------------------------------------------------------
4.  SOURCE OF FUNDS*                                               See Item 3

-----------------------------------------------------------------------------
5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
    PURSUANT TO ITEMS 2(d) or 2(e)                                        [ ]
-----------------------------------------------------------------------------
6.  CITIZENSHIP OR PLACE OF ORGANIZATION                             Delaware

-----------------------------------------------------------------------------
                   7.  SOLE VOTING POWER                                  -0-

   NUMBER OF       ----------------------------------------------------------
   SHARES          8.  SHARED VOTING POWER                       8,177,565**
   BENEFICIALLY
   OWNED BY EACH  -----------------------------------------------------------
   PERSON WITH     9.  SOLE DISPOSITIVE POWER                             -0-

                  -----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER                 8,177,565**

-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,177,565**

-----------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)               11.0%**

-----------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON                                              PN

-----------------------------------------------------------------------------
** See Item 5 below

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP NO. 12497T101              SCHEDULE 13D                    Page 6 of 13

-----------------------------------------------------------------------------
 1.  NAME OF REPORTING PERSON                     BLUM CAPITAL PARTNERS, L.P.

    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON              94-3205364
-----------------------------------------------------------------------------
 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*               (a) [x]
                                                                     (b) [x]
-----------------------------------------------------------------------------
 3.  SEC USE ONLY

-----------------------------------------------------------------------------
 4.  SOURCE OF FUNDS*                                              See Item 3

-----------------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
    PURSUANT TO ITEMS 2(d) or 2(e)                                        [ ]
-----------------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION                          California

-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER                                 -0-

   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER                      8,177,565**
   BENEFICIALLY
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER                            -0-

                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER                 8,177,565**

-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,177,565**

-----------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES                                                       [ ]
-----------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)               11.0%**

-----------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON                                          PN, IA

-----------------------------------------------------------------------------
** See Item 5

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!



CUSIP NO. 12497T101              SCHEDULE 13D                    Page 7 of 13

-----------------------------------------------------------------------------
 1.  NAME OF REPORTING PERSON              RICHARD C. BLUM & ASSOCIATES, INC.

     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON             94-2967812
-----------------------------------------------------------------------------
 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                (a) [x]
                                                                      (b) [x]
-----------------------------------------------------------------------------
 3.  SEC USE ONLY
-----------------------------------------------------------------------------
 4.  SOURCE OF FUNDS*                                              See Item 3
-----------------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) or 2(e)                                       [ ]
-----------------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION                          California

-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER                                 -0-

   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER                     8,177,565**
   BENEFICIALLY
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER                            -0-

                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER                 8,177,565**

-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,177,565**

-----------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES                                                       [ ]
-----------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)               11.0%**

-----------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON                                              CO

-----------------------------------------------------------------------------
** See Item 5

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!




CUSIP NO. 12497T101              SCHEDULE 13D                    Page 8 of 13


Item 1.  Security and Issuer
----------------------------
This Amendment No. 4 amends the Statement on Schedule 13D (the "Schedule
13D") filed with the Securities and Exchange Commission (the "Commission")
on November 16, 2005 by Blum Strategic GP, L.L.C., a Delaware limited
liability company ("Blum GP"); Blum Strategic Partners, L.P., a Delaware
limited partnership ("Blum Strategic"); Blum Strategic GP II, L.L.C., a
Delaware limited liability company ("Blum GP II"); Blum Strategic Partners
II, L.P., a Delaware limited partnership ("Blum Strategic II"); Blum
Capital Partners, L.P., a California limited partnership ("Blum LP");
and Richard C. Blum & Associates, Inc., a California corporation ("RCBA
Inc.") (collectively, the "Reporting Persons").  This Amendment to the
Schedule 13D relates to shares of Class A Common Stock, $0.01 par value
per share (the "Common Stock") of CB Richard Ellis Group, Inc., a
Delaware corporation (the "Issuer").  The principal executive office and
mailing address of the Issuer is 100 N. Sepulveda Boulevard, Suite 1050,
El Segundo, California 90245.  The following amendments to the Schedule
13D are hereby made.  Unless otherwise defined herein, all capitalized
terms shall have the meanings ascribed to them in the Schedule 13D.

Item 2.  Identity and Background
---------------------------------

Item 2 of the Schedule 13D is hereby amended as follows:

Since the filing of Amendment No. 3 to Schedule 13D, there have been
changes to the executive officers of Blum LP and RCBA Inc.

The principal business office address of Blum LP and RCBA Inc. is 909
Montgomery Street, Suite 400, San Francisco, California 94133.  The
names of the executive officers and directors of Blum LP and RCBA
Inc., their addresses, citizenship and principal occupations are as
follows:


Name and               Business             Citizenship  Principal Occupation
Office Held            Address                              or Employment
--------------------  ----------------------- ---------  --------------------

Richard C. Blum       909 Montgomery St.       USA      President & Chairman,
President,            Suite 400                         Blum LP
Chairman & Director   San Francisco, CA 94133

Nils Colin Lind       909 Montgomery St.       Norway   Managing Partner,
Managing Partner      Suite 400                         Blum LP
& Director            San Francisco, CA 94133

Jose S. Medeiros      909 Montgomery St.       Brazil   Partner,
Partner               Suite 400                         Blum LP
                      San Francisco, CA 94133

John H. Park          909 Montgomery St.       USA      Partner,
Partner               Suite 400                         Blum LP
                      San Francisco, CA 94133


CUSIP NO. 12497T101           SCHEDULE 13D                     Page 9 of 13


Name and              Business                Citizen-   Principal Occupation
Office Held           Address                  ship       or Employment
--------------------  -----------------------  ---------  -------------------

Gregory L. Jackson    909 Montgomery St.       USA       Partner,
Partner               Suite 400                          Blum LP
                      San Francisco, CA 94133

Jeffrey A. Cozad      909 Montgomery St.       USA       Partner,
Partner               Suite 400                          Blum LP
                      San Francisco, CA 94133

Jane J. Su            909 Montgomery St.       USA       Partner,
Partner               Suite 400                          Blum LP
                      San Francisco, CA 94133

David H.S. Chung      909 Montgomery St.       USA       Partner,
Partner               Suite 400                          Blum LP
                      San Francisco, CA 94133

Marc T. Scholvinck    909 Montgomery St.       USA       Partner & Chief
Partner, Chief        Suite 400                          Financial Officer,
Financial Officer,    San Francisco, CA 94133            Blum LP
Assistant Secretary
& Director

Gregory D. Hitchan    909 Montgomery St.       USA       Partner, General
Partner, General      Suite 400                          Counsel & Secretary,
Counsel & Secretary   San Francisco, CA 94133            Blum LP


Since the filing of Amendment No. 3 to Schedule 13D, there have been changes
to the members of Blum GP.

The principal business office address of Blum GP is 909 Montgomery Street,
Suite 400, San Francisco, CA  94133.  The names of the managing members and
members of Blum GP, their addresses, citizenship and principal occupations
are as follows:

Name and              Business                 Citizen-   Principal Occupation
Office Held           Address                  ship       or Employment
--------------------  -----------------------  ---------  --------------------

Richard C. Blum        909 Montgomery St.       USA      President & Chairman,
Managing Member        Suite 400                         Blum LP
                       San Francisco, CA 94133

Nils Colin Lind        909 Montgomery St.       Norway   Managing Partner,
Managing Member        Suite 400                         Blum LP
                       San Francisco, CA 94133

Jose S. Medeiros      909 Montgomery St.        Brazil   Partner,
Member                Suite 400                          Blum LP
                      San Francisco, CA 94133


CUSIP NO. 12497T101              SCHEDULE 13D                   Page 10 of 13


Name and              Business                 Citizen-   Principal Occupation
Office Held           Address                  ship       or Employment
--------------------  -----------------------  ---------  -------------------

Jeffrey A. Cozad      909 Montgomery St.        USA      Partner,
Member                Suite 400                          Blum LP
                      San Francisco, CA 94133

Marc T. Scholvinck    909 Montgomery St.        USA      Partner & Chief
Member                Suite 400                          Financial Officer,
                      San Francisco, CA 94133            Blum LP

Gregory D. Hitchan    909 Montgomery St.        USA      Partner, General
Member and General    Suite 400                          Counsel & Secretary,
Counsel               San Francisco, CA 94133            Blum LP


Since the filing of Amendment No. 3 to Schedule 13D, there have been changes
to the members of Blum GP II.

The principal business office address of Blum GP II is 909 Montgomery Street,
Suite 400, San Francisco, CA  94133.  The names of the managing members and
members of Blum GP II, their addresses, citizenship and principal occupations
are as follows:

Name and              Business                Citizen-   Principal Occupation
Office Held           Address                  ship       or Employment
--------------------  -----------------------  ---------  -------------------

Richard C. Blum      909 Montgomery St.       USA       President & Chairman,
Managing Member      Suite 400                          Blum LP
                     San Francisco, CA 94133

Nils Colin Lind      909 Montgomery St.       Norway    Managing Partner,
Managing Member      Suite 400                          Blum LP
                     San Francisco, CA 94133

Jose S. Medeiros     909 Montgomery St.       Brazil    Partner,
Managing Member      Suite 400                          Blum LP
                     San Francisco, CA 94133

John H. Park         909 Montgomery St.       USA       Partner,
Managing Member      Suite 400                          Blum LP
                     San Francisco, CA 94133

Gregory L. Jackson   909 Montgomery St.       USA       Partner,
Managing Member      Suite 400                          Blum LP
                     San Francisco, CA 94133

Jeffrey A. Cozad     909 Montgomery St.       USA       Partner,
Managing Member      Suite 400                          Blum LP
                     San Francisco, CA 94133

Marc T. Scholvinck   909 Montgomery St.       USA       Partner & Chief
Managing Member      Suite 400                          Financial Officer,
                     San Francisco, CA 94133            Blum LP

Gregory D. Hitchan   909 Montgomery St.       USA       Partner, General
Member and           Suite 400                          Counsel & Secretary,
General Counsel      San Francisco, CA 94133            Blum LP


CUSIP NO. 12497T101              SCHEDULE 13D                   Page 11 of 13

To the best knowledge of the Reporting Persons, none of the entities or
persons identified in this Item 2 has, during the past five years, been
convicted of any criminal proceeding (excluding traffic violations or
similar misdemeanors), nor been a party to a civil proceeding of a judicial
or administrative body of competent jurisdiction and as a result of such
proceeding was or is subject to a judgment, decree or final order enjoining
future violations of, or prohibiting or mandating activities subject to,
federal or state securities laws or finding any violation with respect to
such laws.

Item 5.  Interest in Securities of the Issuer
---------------------------------------------

(a),(b) According to the Issuer's Form 10-Q, filed with the Commission on
May 10, 2006, there were 74,311,957 shares of Common Stock issued and
outstanding as of April 28, 2006.  Based on such information, after taking
into account the transactions described in Item 5(c) below, the Reporting
Persons report beneficial ownership of the following shares of Common Stock:
(i) 787 shares of Common Stock held by Blum LP and RCBA Inc.; (ii) 3,741,255
shares of Common Stock held by Blum GP on behalf of the limited partnership
for which it serves as the general partner, which represents 5.0% of the
outstanding shares of the Common Stock; and (iii) 4,435,523 shares of
Common Stock held by Blum GP II on behalf of the limited partnership for
which it serves as the general partner and on behalf of the limited
partnership for which it serves as the managing limited partner, which
represents 6.0% of the outstanding shares of the Common Stock.

Voting and investment power concerning the above shares are held solely by
Blum LP, Blum GP and Blum GP II.  The Reporting Persons therefore may be
deemed to be members in a group, in which case the group would be deemed to
have beneficial ownership of an aggregate of 8,177,565 shares of the Common
Stock, which is 11.0% of the outstanding Common Stock.  As the sole general
partner of Blum LP, RCBA Inc. is deemed the beneficial owner of the
securities over which Blum LP has voting and investment power.  The
filing of this Schedule shall not be construed as an admission that any
of the shareholders, directors or executive officers of RCBA Inc. or the
managing members and members of Blum GP or Blum GP II, is, for any purpose,
the beneficial owner of any of the securities that are beneficially owned by
RCBA Inc., Blum GP or Blum GP II.

c) During the last 60 days, the Reporting Persons sold the following shares
of Common Stock to a market maker pursuant to Rule 144:


Entity                          Trade Date    Shares    Price/Share
------                           ---------    -------   ----------
The limited partnership for      05-09-06    1,066,100   86.03
which Blum GP serves as
general partner.


CUSIP NO. 12497T101              SCHEDULE 13D                   Page 12 of 13


Entity                          Trade Date    Shares    Price/Share
------                           ---------    -------   ----------
The limited partnerships for     05-09-06    1,263,900     86.03
which Blum GP II serves as
general partner and the
managing limited partner.

(d) and (e)  Not applicable.


Item 7.  Material to be Filed as Exhibits
-----------------------------------------

Exhibit A  Joint Filing Undertaking (filed herewith).








CUSIP NO. 12497T101             SCHEDULE 13D                    Page 13 of 13

                                 SIGNATURES

After reasonable inquiry and to the best of our knowledge and belief, the
undersigned certify that the information set forth in this statement is
true, complete and correct.

Dated:  May 15, 2006

RICHARD C. BLUM & ASSOCIATES, INC.    BLUM CAPITAL PARTNERS, L.P.
                                      By: Richard C. Blum & Associates, Inc.
                                          its general partner



By: /s/ Gregory D. Hitchan              By: /s/ Gregory D. Hitchan
    -------------------------------       -----------------------------------
    Gregory D. Hitchan,                   Gregory D. Hitchan,
    Partner, General Counsel and          Partner, General Counsel and
    Secretary                             Secretary


BLUM STRATEGIC GP, L.L.C.             BLUM STRATEGIC PARTNERS, L.P.
                                      By:  Blum Strategic GP, L.L.C.
                                            Its General Partner

By: /s/ Gregory D. Hitchan            By: /s/ Gregory D. Hitchan
    -------------------------------       -------------------------------
    Gregory D. Hitchan                    Gregory D. Hitchan
    Member and General Counsel            Member and General Counsel




BLUM STRATEGIC GP II, L.L.C.          BLUM STRATEGIC PARTNERS II, L.P.
                                      By:  Blum Strategic GP II, L.L.C.
                                           Its General Partner



By: /s/ Gregory D. Hitchan            By:  /s/ Gregory D. Hitchan
    -------------------------------        ------------------------------
     Gregory D. Hitchan                    Gregory D. Hitchan
     Member and General Counsel            Member and General Counsel











CUSIP NO. 12497T101             SCHEDULE 13D                    Page 1 of 1

                                   Exhibit A
                           JOINT FILING UNDERTAKING

The undersigned, being duly authorized thereunto, hereby execute this
agreement as an exhibit to this Schedule 13D to evidence the agreement
of the below-named parties, in accordance with the rules promulgated
pursuant to the Securities Exchange Act of 1934, to file this Schedule
jointly on behalf of each such party.

Dated:  May 15, 2006


RICHARD C. BLUM & ASSOCIATES, INC.    BLUM CAPITAL PARTNERS, L.P.
                                      By: Richard C. Blum & Associates, Inc.
                                          its general partner



By: /s/ Gregory D. Hitchan              By: /s/ Gregory D. Hitchan
    -------------------------------       -----------------------------------
    Gregory D. Hitchan,                   Gregory D. Hitchan,
    Partner, General Counsel and          Partner, General Counsel and
    Secretary                             Secretary


BLUM STRATEGIC GP, L.L.C.                 BLUM STRATEGIC PARTNERS, L.P.
                                          By:  Blum Strategic GP, L.L.C.
                                                Its General Partner

By: /s/ Gregory D. Hitchan                By: /s/ Gregory D. Hitchan
    ------------------------------            -------------------------------
     Gregory D. Hitchan                       Gregory D. Hitchan
     Member and General Counsel               Member and General Counsel




BLUM STRATEGIC GP II, L.L.C.              BLUM STRATEGIC PARTNERS II, L.P.
                                          By:  Blum Strategic GP II, L.L.C.
                                               Its General Partner



By: /s/ Gregory D. Hitchan                By:  /s/ Gregory D. Hitchan
    -------------------------------           -----------------------------
     Gregory D. Hitchan                       Gregory D. Hitchan
     Member and General Counsel               Member and General Counsel