I have a Power Mac G5 dual 2.7GHz with a Nvidia 6800 Ultra DDL card running two Dell 24" 2405's. I just installed OS X 10.5 and have upgraded to 10.5.2. I have done all the software updates. There is something wrong with the drivers or the video card. My desktop pixilates when I drag my windows, etc... I have read threads that this happens with ATI cards, but it seems to be happening to my Nvidia card. Has anyone seen this before? How would I do a firmware update on my card? I could'nt find anything on the apple site or nvidia's site. Any help is greatly appreciated!!