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

                                  SCHEDULE 13G

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


                           STRATOS INTERNATIONAL, INC.
        ----------------------------------------------------------------
                                (Name of Issuer)

                                  Common Stock
        ----------------------------------------------------------------
                         (Title of Class of Securities)

                                    863100202
                              --------------------
                                 (CUSIP Number)

                                December 31, 2005
        ----------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

         / X /    Rule 13d-1(b)
         /   /    Rule 13d-1(c)
         /   /    Rule 13d-1(d)

*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 the
disclosures provided in a prior cover page.

The information required in 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 the section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).





                                  SCHEDULE 13G
                               CUSIP NO. 863100202

1.       Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only).

         Quaker Capital Management Corporation
         -----------------------------------------------------------

2.       Check the Appropriate Box if a Member of a Group

         (a)
                  ------
         (b)        X
                  ------

3.       SEC Use Only
                            --------------------------------------------

4.      Citizenship or Place of Organization            Pennsylvania
                                                        --------------

Number of         5.       Sole Voting Power            1,094,500
  Shares                                                --------------
Beneficially      6.       Shared Voting Power          0
  Owned by                                              --------------
Each Reporting    7.       Sole Dispositive Power       1,094,500
    Person                                              --------------
         With:    8.       Shared Dispositive Power     0
                                                        --------------

9.       Aggregate Amount Beneficially Owned by Each Reporting Person

         1,094,500
         ----------------

10.      Check if the Aggregate Amount in Row (9) Excludes Certain
         Shares
                    --------
         The Reporting Person disclaims beneficial ownership of 1,094,500 shares
         owned by its clients.

11.      Percent of Class Represented by Amount in Row (9)

                                                      7.49%
                                                      --------

12. Type of Reporting Person                               IA
                                                      --------------


                               Page 2 of 6 Pages



                                  SCHEDULE 13G
                               CUSIP NO. 863100202

Item 1.

         (a)      Name of Issuer

                  STRATOS INTERNATIONAL, INC.
                  ------------------------------------------------------

         (b)      Address of Issuer's Principal Executive Offices

                  7444 West Wilson Avenue, Chicago, IL 60706
                  ------------------------------------------------------
Item 2.

         (a)      Name of Persons Filing

                  Quaker Capital Management Corporation
                  ------------------------------------------------------

         (b)      Address of Principal Business Office or, if none, Residence

                  401 Wood Street, Suite 1300, Pittsburgh, PA  15222
                  ------------------------------------------------------

         (c)      Citizenship

                  Pennsylvania Corporation
                  ------------------------------------------------------

         (d)      Title of Class of Securities

                  Common Stock
                  ------------------------------------------------------

         (e)      CUSIP Number

                  863100202
                  ------------------------------------------------------


                               Page 3 of 6 Pages



                                  SCHEDULE 13G
                               CUSIP NO. 863100202

Item 3.           If this statement is filed pursuant to ss.ss.240.13d-1(b) or
                  240.13d-2(b) or (c), check whether the person filing is a:

     (a)       /   / Broker of dealer registered under section 15 of the Act;

     (b)       /   / Bank as defined in section 3(a)(6) of the Act;

     (c)       /   / Insurance company as defined in section 3(a)(19) of the
                     Act;

     (d)       /   / Investment company registered under section 8 of the
                     Investment Company Act of 1940;

     (e)       / X / An investment adviser in accordance with
                     ss.240.13d-1(b)(l)(ii)(E);

     (f)       /   / An employee benefit plan or endowment fund in accordance
                     with ss.240.13d-1(b)(1)(ii)(F);

     (g)       /   / A parent holding company or control person in accordance
                     with ss.240.13d-1(b)(1)(ii)(G);

     (h)       /   / A savings association as defined in Section 3(b) of the
                     Federal Deposit Insurance Act;

     (i)       /   / A church plan that is excluded from the definition of an
                     investment company under section 3(c)(14)of the Investment
                     Company Act of 1940;

     (j)       /   / Group, in accordance with ss.240.13d-1((b)(l)(ii)(J)

Item 4.           Ownership
                  ---------

         (a)      The Reporting Person, in its capacity as investment adviser,
                  may be deemed to be the beneficial owner of 1,094,500 shares
                  of the Common Stock of the Issuer which are owned by various
                  investment advisory clients of the Reporting Person in
                  accounts over which the Reporting Person has discretionary
                  authority. The filing of this report shall not be construed as
                  an admission that the Reporting Person is, for purposes of
                  Section 13(d) or 13(g) of the Act, the beneficial owner of
                  these securities.

                               Page 4 of 6 Pages



         (b)      The shares covered by this report represent 7.49% of the
                  Common Stock of the Issuer.

         (c)      The Reporting Person has sole voting and dispositive power
                  over 1,094,500 shares owned by its clients and held in
                  accounts over which it has discretionary authority.

Item 5.           Ownership of Five Percent or Less of a Class

                  If this statement is being filed to report the fact that as of
the date hereof, the reporting person has ceased to be the beneficial owner of
more than five percent of the class of securities, check the following:

                                                                  ----------

Item 6.           Ownership of More than Five Percent on Behalf of
                  Another Person

                  All 1,094,500 of the shares with respect to which this report
is filed are owned by a variety of investment advisory clients of the Reporting
Person, which clients are entitled to receive dividends on and the proceeds from
the sale of such shares. No client is known to own more than 5% of the class.

Item 7.           Identification and Classification of the Subsidiary Which
                  Acquired the Security Being Reported on by the Parent
                  Holding Company

                  Not applicable.

Item 8.           Identification and Classification of Members of the Group

                  Not applicable.

Item 9.           Notice of Dissolution of Group

                  Not applicable.

Item 10.          Certification

                  By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were acquired and are held in the
ordinary course of business and were not acquired and are not held for the
purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.



                               Page 5 of 6 Pages



                                    SIGNATURE

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


                                  QUAKER CAPITAL MANAGEMENT CORPORATION


                                     February 14, 2006
                                     -----------------------------------
                                                                Date



                                     /s/ Mark G. Schoeppner
                                     -----------------------------------
                                                           Signature



                                    Mark G. Schoeppner, President
                                    ------------------------------------
                                                          Name/Title





                               Page 6 of 6 Pages