sp2torrent.com has Windows XP Service Pack 2 up on a torrent.

This website has been setup by Downhill Battle - Music Activism as a demonstration of how peer-to-peer filesharing technology can help distribute files that are too large for centralized distribution to handle. Even Microsoft, which has incredible server resources at their disposal, is limiting downloads of their SP2 release, but filesharing technology can let everyone download it right away (see below). Congress is literally preparing to outlaw filesharing– it is crucial that we rally to defend and promote the technology.