Hi,Never had this problem before now.I have a fresh install of windows Xp Pro,all update's done on windows update.net framework 3.5,and C++ 2005 updated etc.Have a X1950 pro 512mb agp card installed,trend micro security 2009 disabled for install.Installed Ati Radeon 9.3 catalyst drivers as instructed,all went fine on install.Catalyst control working ok after install.The problem I'm having is when I boot up I get a Error that says(Catalyst Control Centre:Host Application has encountered a problem and needs to close.)? This is driving me nut's? Is it because of 9.3 drivers?Do I need to go back to 9.2? I never had this before,seems to be only when I do a hard boot.Anyone else have this problem in Windows Xp Pro Sp2? Never had it before,always something new.Any help here would be awesome.Thanks