A community site is rep[orting that the Win2k and WinNT source code has leaked.
http://www.neowin.net/comments.php?id=17509&category=main
Including a link to the file tree
http://home.hccnet.nl/pacjack/src/INDEX (no files)
And here comes GrokLaw with the obligatory warning to the OSS all and sundry
http://www.groklaw.net/article.php?story=20040212190859280