Have 20 XP Pro clients on SBS 2003 single server. Moved one from point A to B, carefully - no bumps or bangs, etc. Was used for intense graphics in old location - now used for light office work. No new installs, or deletes - didn't even change computer name. Just added new user to AD and Exchange Server mailbox. System now sluggish, will hang randomly and needs to be manually shutdown to restart. Will go into a reboot multiple times after network logon but before desktop populates. Running tests now and will pop the hood tomorrow. Need to have running before Monday morning. Coincidental or just my darn bad luck??? Suspect HD. Somebody snatch up these points!!!