Ok, just got finished assembling a HTPC system, and for some reason desktop video performance is atrocious. When I drag windows around, it's like I'm back in the early 90's with the slow redraw rate. I can't even scroll web pages smoothly up and down. Everything seemed fine until I install the ATI Catalyst Control Center. So I'm guessing that's where the problem started. The system is an AMD X2 4800 with an ATI AIW X800 XT. Any ideas on how to fix this?