Pirated copies of Windows 7 Service Pack 1 (SP1) leaked to the Internet last week, searches at several BitTorrent sites show.

The purported Windows 7 SP1 build was tagged as "6.1.7601.16537.100327-0053," indicating that it was compiled by Microsoft on March 27, 2010. According to tallies at several file-sharing sites, several thousand copies of the leak have been grabbed by downloaders since it went live last Wednesday.

In March, Microsoft confirmed that it was working on service packs for both Windows 7 and Windows Server 2008 R2, but declined to set a ship date for the upgrades. At the time, the company said that the service packs would primarily be composed of "minor updates," including patches and hotfixes that will have been delivered already via the Windows Update service, and a limited number of new features. Among the latter: an updated Remote Desktop client designed to work with RemoteFX, the new remote-access platform set to debut in Windows Server 2008 R2 SP1.

More: http://pcworld.com/article/194091/