http://msmvps.com/blogs/kwsupport/archive/2008/05/14/xp-sp3-and-hp.aspxWell HP finally admits there's an issue (surprise, surprise) with XP SP3 and some of their AMD systems. They are recommending to their users to NOT install SP3 until they have a prerequisite fix available for download later this week. Read more hereenCommunityServer 2008.5 SP2 (Build: 40407.4157)