WIndows XP computer on SBS 2008, recently reformatted. After logging in the computer clock sets back 1 hour. The date/time/timezone are correct. I fixed this by turning off the WIndows time service. However, calendar appointments in Outlook are one hour before they should be. In OWA the times are correct. The clock on the server is correct. I'm at a loss. ORiginally had Outlook XP but upgraded to Outlook 2003. I've now uninstalled Trend Micro to see if this was causing it. Before the reformat there were no time issues.