Document:

COMPUTONE                                Press Contacts:   Keith H. Daniel
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       CORPORATION                                         Computone Corporation
                                                           +770-625-0000 - X1800
                                                           keithd@computone.com

For Immediate Release
---------------------

    COMPUTONE CORPORATION ANNOUNCES CHANGES TO ITS EXECUTIVE MANAGEMENT TEAM

ATLANTA,  February 8, 2001 - Computone Corporation (OTC BB: CMPT), an IT pioneer
and leader in connectivity products and remote access communications,  announced
several executive management changes. John Freitag,  Computone's Chairman of the
Board, has assumed the interim role of Chief Executive Officer,  replacing Perry
Pickerign. Two new executives have been added to expand the depth of Computone's
management team. Mark Trimue has been appointed to the newly-created position of
Executive Vice  President of Sales and Marketing.  E. Leo Bebeau has assumed the
position of Executive Vice President and Chief Operating Officer. The Company is
also in the  final  stages  of  filling  the  newly-created  position  of  Chief
Technology Officer and expects to make that announcement in the near future.

Mark Trimue brings back to Computone over twenty-two  years of high-tech  sales,
marketing  and  teambuilding  experience  having  held  executive  level  sales,
marketing and business development  positions with Samna Corporation,  Computone
Corporation  (1989 to 1992),  Equinox Systems,  Inc.,  Berkeley Software Design,
Inc., and ClickSoftware, Inc. His prior tenure at Computone as Vice President of
Sales  coincided with a time of  substantial  sales success for the Company that
included  major OEM supplier  business  arrangements  with  companies  including
IBM(R),  Data General(R),  NCR(R),  Compaq(R),  Dell(R),  and AT&T(R) as well as
expanded international distribution.

E.  Leo  Bebeau  brings  back to  Computone  over  twenty  years  of  successful
operations,  marketing and finance experience.  Leo has successfully founded and
sold  two  technology  companies.  He held the  position  of Vice  President  of
Operations  and  Marketing  at  Computone  from  1987  to 1992  and has  been an
independent  consultant for companies in facilities design and management,  home
health care, and medical accounting systems since 1992.

"I am pleased to welcome both Mark and Leo back to the Computone  team.  Each is
extremely  accomplished in his area of expertise," said Mr. Freitag.  "They will
draw on extensive industry knowledge,  hands-on management  experience and their
proven  track  records  in  successfully  growing  technology  businesses.  Most
importantly,  as we  develop  our  strategic  plans  for 2001 and  beyond,  I am
confident  their  great  understanding  of our  products  and our  markets  will
significantly contribute to our growth plans."

Computone Corporation (OTC BB: CMPT,  www.computone.com)  has been a pioneer and
leader in the  worldwide  IT industry  since  1984.  Today,  Computone  designs,
manufactures  and markets a comprehensive  line of intelligent  servers used for
secure  remote  network  management,   secure  E-commerce,   and  remote  access
communications  for Internet,  LAN/WAN and Windows  NT/SCO  UNIX/Linux and other
Open Systems.

This  press  release  contains  certain  forward-looking  statements  within the
meaning of section  27A of the  Securities  Act of 1933 and  Section  21E of the
Securities  Exchange Act of 1934.  With the exception of historical  information
contained  herein,  the matters discussed in this press release involve risk and
uncertainties.  Actual results could differ  materially  from those expressed in
any forward-looking statement.

All trademarks are properties of their respective owners.<PAGE>

                                                                     EXHIBIT 4.1

                             DIGITAL ISLAND, INC.
                         REGISTRATION RIGHTS AGREEMENT

     THIS REGISTRATION RIGHTS AGREEMENT (the "Agreement") is entered as of July
1, 2000, by and among DIGITAL ISLAND, INC., a Delaware corporation ("Digital
Island"), and SRI International, a California nonprofit public benefit
corporation ("SRI").

     WHEREAS, Digital Island is obligated to issue shares of its Common Stock to
SRI pursuant to the Technology Purchase Agreement and Research Alliance, by and
between Digital Island and SRI, dated as of November 22, 1999 (the "Alliance
Agreement");

     WHEREAS, in connection with the transactions contemplated by the Alliance
Agreement, Digital Island wishes to grant to SRI certain registration rights
covering such shares, upon the terms and conditions set forth below;

     WHEREAS, the parties desire that this Agreement supercede and replace
Section 2.5.6 of the Alliance Agreement in its entirety;

     WHEREAS, the parties desire that all other provisions except Section 2.5.6
of the Alliance Agreement shall remain in full force and effect;

     NOW, THEREFORE, in consideration of these premises and for good and valid
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto agree as follows:

     1.   Registration.  Upon request by SRI, at any time that Digital Island is
          ------------
eligible to use Form S-3 under the Securities Act of 1933, as amended (the
"Act"), Digital Island shall register for resale on Form S-3 under the Act all
of the shares of Digital Island common stock issued under the Alliance
Agreement, including any shares issued subsequent to the original effectiveness
of such registration statement, and shall keep such resale registration in
effect for up to one hundred eighty (180) days (or such earlier date on which
the shares registered for resale thereunder have been disposed of or may be sold
or disposed of in a 90-day period under Rule 144 under the Act). In addition,
Digital Island shall notify SRI in advance of any registration to be undertaken
by Digital Island while SRI holds of record any of the shares issued thereunder
and has not disposed of such shares and is not then permitted to resell such
shares in a 90-day period pursuant to Rule 144 under the Act, and will use its
reasonable best efforts to include shares of Digital Island common stock issued
thereunder which SRI requests in writing to be so included, provided that the
foregoing shares shall be subject to "cut back" by any managing underwriter of
the offering being registered if the inclusion thereof is believed in good faith
to be detrimental to the offering. Such registration rights shall be subject to
customary "black out" restrictions; provided that the effective period of such
registration statement shall be extended by the length of any such "black out"
so that SRI has the full one hundred eighty (180) days (or lesser period as
provided above) in which to sell securities thereunder.

     2.  Business Combinations.  The provisions of Section 1 shall be applicable
         ---------------------
to shares of capital stock into which Digital Island common stock will be
converted or exchanged, directly or indirectly, whether by merger,
consolidation, business combination or otherwise.

     3.  Governing Law; Attorney's Fees.  This Agreement shall be governed and
         ------------------------------
construed in accordance with the laws of the State of California, without regard
to the conflicts of law principles thereof.  In any action to enforce this
Agreement the prevailing party will be entitled to costs and reasonable
attorneys' fees.

     4.  Assignment.  The obligations of this Agreement shall be fully binding
         ----------
upon, and the rights of this Agreement shall inure to the benefit of, the
permitted successors or assigns of either party.

     5.  Notices.  Any consent, notice or report required or permitted to be
         -------
given or made under this Agreement by one party to the other party shall be in
writing, delivered by any lawful means and addressed to the other party at its
address indicated below, or to such other address as the addressee shall have
last furnished in writing to the addressor.  Except as otherwise provided in
this Agreement, such consent, notice or report shall be effective upon receipt
by the addressee.

To SRI:                                          To Digital Island:
SRI International                                Digital Island, Inc.

<PAGE>

333 Ravenswood Avenue                            45 Fremont Street, 12th Floor
Menlo Park, CA  94025                            San Francisco, CA 94105
Attn: Contract Administration                    Attn:  Chris Albinson
Telephone:  (650) 859-2004                       Telephone:  (415) 738-4196
Facsimile:  (650) 859-5860                       Facsimile:  (415) 738-4397

                                                 With a copy to:
                                                 Brobeck, Phleger & Harrison LLP
                                                 Two Embarcadero Place
                                                 2200 Geng Road
                                                 Palo Alto, CA 94303
                                                 Attn:  Curtis L. Mo, Esq.
                                                 Telephone:  (650) 424-0160
                                                 Facsimile:  (650) 496-2736

     6.   Severability.  Any provisions of this Agreement which are determined
          ------------
to be invalid or unenforceable in any jurisdiction shall be ineffective to the
extent of such invalidity or unenforceability in such jurisdiction, without
rendering invalid or unenforceable the remaining provisions hereof and without
affecting the validity or enforceability of any of the terms of this Agreement
in any other jurisdiction.

     7.   Waiver and Amendments.  No change, modification, extension or
          ---------------------
termination or waiver of this Agreement, or any of the provisions herein
contained, shall be valid unless made in writing and signed by a duly authorized
representative of the parties hereto.

     8.  Alliance Agreement.  The parties expressly agree that all provisions of
         ------------------
the Alliance Agreement other than Section 2.5.6 shall remain in full force and
effect.

     9.  Counterparts.  This Agreement may be executed in two or more
         ------------
counterparts each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

<PAGE>

     IN WITNESS WHEREOF, the parties have caused this Registration Rights
Agreement to be executed on the date first written above.

  DIGITAL ISLAND, INC.                           SRI INTERNATIONAL

By: /s/ Howard Lasky                             By: /s/ Thomas J. Furst
    --------------------------                       -------------------------

Name: Howard Lasky                               Name: Thomas J. Furst
      ------------------------                         -----------------------

Title: Vice President and General Counsel        Title: Sr. Vice President, CFO
       ----------------------------------               -----------------------

               [SIGNATURE PAGE TO REGISTRATION RIGHTS AGREEMENT]

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