Hey, I just installed arch linux on one of my relatives computers and the video driver seems to be wrong. I can start gnome and everything is fine until I open firefox and try visiting any page, then everything becomes pixely and ugly. Everything works except the display. Most of the available video drivers are installed, and I've edited the xorg.conf.d to load the radeon driver, but it doesn't seem to work. The card is a Radeon X1200.
Any help would be very appreciated 
Update: It looks like the problem was with gnome3 (maybe?) I changed the xorg.conf.d options for my card and that seemed to help some, but it still didn't work very well. I installed e17 and everything seems to be working fine with that. Any ideas what's causing gnome to do this?