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


                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                               (Amendment No. 2*)
                                             ---

                              Avid Technology, Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)

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


                                    05367P100
                            -------------------------
                                 (CUSIP Number)

                                December 31, 2003
              -----------------------------------------------------
             (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 that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

                               Page 1 of 10 Pages



CUSIP No. 05367P100                  13G                      Page 2 of 10 Pages
          -----------
--------------------------------------------------------------------------------
  1     NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Columbia Wanger Asset Management, L.P. 36-3820584
--------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

        Not Applicable                                                   (a) [_]

                                                                         (b) [_]
--------------------------------------------------------------------------------
  3     SEC USE ONLY

--------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware
--------------------------------------------------------------------------------
     NUMBER OF        5    SOLE VOTING POWER

       SHARES              None
                      ----------------------------------------------------------
    BENEFICIALLY      6    SHARED VOTING POWER

      OWNED BY             1,600,000
                      ----------------------------------------------------------
        EACH          7    SOLE DISPOSITIVE POWER

     REPORTING             None
                      ----------------------------------------------------------
    PERSON WITH       8    SHARED DISPOSITIVE POWER

                           1,600,000
--------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        1,600,000
--------------------------------------------------------------------------------
  10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

        Not Applicable                                                       [_]
--------------------------------------------------------------------------------
  11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        5.2 %
--------------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON*

        IA
--------------------------------------------------------------------------------



CUSIP No. 05367P100                    13G                    Page 3 of 10 Pages
          --------------


--------------------------------------------------------------------------------
  1     NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        WAM Acquisition GP, Inc.
--------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

        Not Applicable                                                   (a) [_]

                                                                         (b) [_]
--------------------------------------------------------------------------------
  3     SEC USE ONLY

--------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware
--------------------------------------------------------------------------------
     NUMBER OF        5    SOLE VOTING POWER

       SHARES              None
                      ----------------------------------------------------------
    BENEFICIALLY      6    SHARED VOTING POWER

      OWNED BY             1,600,000
                      ----------------------------------------------------------
        EACH          7    SOLE DISPOSITIVE POWER

     REPORTING             None
                      ----------------------------------------------------------
    PERSON WITH       8    SHARED DISPOSITIVE POWER

                           1,600,000
--------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        1,600,000
--------------------------------------------------------------------------------
  10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

        Not Applicable                                                       [_]
--------------------------------------------------------------------------------
  11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        5.2 %
--------------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON*

        CO
--------------------------------------------------------------------------------



CUSIP No. 05367P100                    13G                    Page 4 of 10 Pages
          --------------


--------------------------------------------------------------------------------
  1     NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Columbia Acorn Trust
--------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

        Not Applicable                                                   (a) [_]

                                                                         (b) [_]
--------------------------------------------------------------------------------
  3     SEC USE ONLY

--------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Massachusetts
--------------------------------------------------------------------------------
     NUMBER OF        5    SOLE VOTING POWER

       SHARES              None
                      ----------------------------------------------------------
    BENEFICIALLY      6    SHARED VOTING POWER

      OWNED BY             1,600,000
                      ----------------------------------------------------------
        EACH          7    SOLE DISPOSITIVE POWER

     REPORTING             None
                      ----------------------------------------------------------
    PERSON WITH       8    SHARED DISPOSITIVE POWER

                           1,600,000
--------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        1,600,000
--------------------------------------------------------------------------------
  10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

        Not Applicable                                                       [_]
--------------------------------------------------------------------------------
  11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        5.2 %
--------------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON*

        IV
--------------------------------------------------------------------------------



Item 1(a)         Name of Issuer:

                     Avid Technology, Inc.

Item 1(b)         Address of Issuer's Principal Executive Offices:

                     Avid Technology Park
                     One Park West
                     Tewksbury, MA 01876

Item 2(a)         Name of Person Filing:

                     Columbia Wanger Asset Management, L.P. ("WAM")
                     WAM Acquisition GP, Inc., the general partner of WAM
                     ("WAM GP")
                     Columbia Acorn Trust ("Acorn")

Item 2(b)         Address of Principal Business Office:

                     WAM, WAM GP, and Acorn are all located at:

                     227 West Monroe Street, Suite 3000
                     Chicago, Illinois 60606

Item 2(c)         Citizenship:

                     WAM is a Delaware limited partnership; WAM GP is a Delaware
                     corporation; and Acorn is a Massachusetts business trust.

Item 2(d)         Title of Class of Securities:

                     Common Stock

Item 2(e)         CUSIP Number:

                     05367P100

Item 3            Type of Person:

                     (d)     Acorn is an Investment Company under section 8 of
                             the Investment Company Act.

                     (e)     WAM is an Investment Adviser registered under
                             section 203 of the Investment Advisers Act of 1940;
                             WAM GP is the General Partner of the Investment
                             Adviser.

                               Page 5 of 10 Pages



Item 4            Ownership (at December 31, 2003):

                     (a)     Amount owned "beneficially" within the meaning of
                             rule 13d-3:

                             1,600,000

                     (b)     Percent of class:

                             5.2 % (based on 30,726,430 shares outstanding as of
                             November 4, 2003).

                     (c)     Number of shares as to which such person has:

                                 (i)       sole power to vote or to direct the
                                           vote: none

                                 (ii)      shared power to vote or to direct the
                                           vote: 1,600,000

                                 (iii)     sole power to dispose or to direct
                                           the disposition of: none

                                  (iv)     shared power to dispose or to direct
                                           disposition of: 1,600,000

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

                     Not Applicable

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

                     The shares reported herein have been acquired on behalf of
                     discretionary clients of WAM, including Acorn. Persons
                     other than WAM and WAM GP are entitled to receive all
                     dividends from, and proceeds from the sale of, those
                     shares. Acorn is the only such person known to be entitled
                     to all dividends from, and all proceeds from the sale of,
                     shares reported herein to the extent of 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

                               Page 6 of 10 Pages



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 7 of 10 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.

Date:  February 10, 2004

                           The undersigned corporation, on the date above
                           written, agrees and consents to the joint filing on
                           its behalf of this Schedule 13G in connection with
                           its beneficial ownership of the security reported
                           herein.

                                         WAM Acquisition GP, Inc.
                                          for itself and as general partner of
                                          COLUMBIA WANGER ASSET MANAGEMENT, L.P.



                                         By: /s/ Bruce H. Lauer
                                             -----------------------------------
                                                 Bruce H. Lauer
                                                 Senior Vice President and
                                                 Secretary

                           The undersigned trust, on the date above written,
                           agrees and consents to the joint filing on its behalf
                           of this Schedule 13G in connection with its
                           beneficial ownership of the security reported herein.


                                        COLUMBIA ACORN TRUST



                                        By: /s/ Bruce H. Lauer
                                            ------------------------------------
                                                Bruce H. Lauer
                                                Vice President, Treasurer and
                                                Secretary

                               Page 8 of 10 Pages



                                  Exhibit Index

Exhibit 1       Joint Filing Agreement dated as of February 10, 2004 by and
                among Columbia Wanger Asset Management, L.P., WAM Acquisition
                GP, Inc. and Columbia Acorn Trust.

                               Page 9 of 10 Pages



                                                                       EXHIBIT 1

                             JOINT FILING AGREEMENT

         The undersigned hereby agree to the joint filing of the Schedule 13G to
which this Agreement is attached.

                           Dated:  February 10, 2004

                                          WAM Acquisition GP, Inc.
                                          for itself and as general partner of
                                          COLUMBIA WANGER ASSET MANAGEMENT, L.P.



                                         By:  /s/ Bruce H. Lauer
                                              ----------------------------------
                                                  Bruce H. Lauer
                                                  Senior Vice President and
                                                  Secretary



                                         COLUMBIA ACORN TRUST



                                         By:  /s/ Bruce H. Lauer
                                              ----------------------------------
                                                  Bruce H. Lauer
                                                  Vice President, Treasurer and
                                                  Secretary

                               Page 10 of 10 Pages