Microsoft is sending out letters to get people to remove the leaked source code apparently. A person I know got the following e-mail:

From: jkweston@microsoft.com
Subject: NOTICE OF POTENTIAL UNLAWFUL DISTRIBUTION OF
         MICROSOFT SOURCE CODE
To: *********
Reply-To: jkweston@microsoft.com
Date: Sat, 14 Feb 2004 00:35:45 -0800

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

J.K. Weston
Microsoft Corporation
One Microsoft Way
Redmond, WA 98052
jkweston@microsoft.com
Tel: (425) 703-5529


14 Feb 2004 08:44:50 GMT

URGENT/IMMEDIATE ATTENTION REQUIRED
VIA ELECTRONIC MAIL

Re: NOTICE OF POTENTIAL UNLAWFUL DISTRIBUTION OF MICROSOFT
    SOURCE CODE
AT: ***.**.***.***

Date of Infringement: Detail below.

Dear ISP:

We have received information that one of your users as
identified above by the SITE/URL ***.**.***.*** may have
engaged in the unlawful distribution of Microsoft's source
code for Windows 2000, and/or Windows NT4, by distributing
and offering for download these source code files via a
peer-to-peer network.

Since you own this IP address, we request that you take
appropriate action against the account holder under your
Abuse Policy/Terms of Service Agreement.

We also kindly request that you forward this notice promptly
to the user of the IP address listed above at the time and
date stated.

To the user at ***.**.***.***:

The unauthorized copying and distribution of Microsoft's
protected source code is a violation of both civil and
criminal copyright and trade secret laws.  If you have
downloaded and are making the source code available for
downloading by others, you are violating Microsoft's
rights, and could be subject to severe civil and criminal
penalties.

Microsoft demands that you immediately (1) cease making
Microsoft's source code available or otherwise distributing
it, (2) destroy any and all copies you may have in your
possession, and (3) provide us any and all information about
how you came into possession of this code.

Microsoft takes these issues very seriously, and will pursue
legal action against individuals who take part in the
proliferation of it source code.  We look forward to your
prompt cooperation.  Should you need to contact me, I can be
reached at the address above or at jkweston@microsoft.com.

Very truly yours,

By
J.K. Weston

CaseID: 60

Infringers IP Address:  ***.**.***.***
Initial Infringement Timestamp:  13 Feb 2004 00:39:32 GMT
Recent Infringement Timestamp: 13 Feb 2004 01:23:17 GMT
Notice ID: 61
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Most interesting is the 'CaseID', apperently there are only 60 such letters send out so far ;). I'll follow up when the story continues