Bandipat, thanks for your efforts. Lots of scratching around and I still havent found the problem. But it magically sorted itself out (that or it just needed a reboot) and when I tried gears today it worked. Sort of. The framerates aren't what I expect, they're only about double what I used to get on a TNT2 Vanta 16mb. The gears are jerky, and I also notice that gears don't use 100% CPU like it used to. Card is a Powercolor Radeon 7500 with 128mb DDR. Are these scores right? 1024x768 16 bit full screen: hans@sigaar:~> gears 850 frames in 5.005 seconds = 169.830 FPS 851 frames in 5.001 seconds = 170.166 FPS 850 frames in 5.001 seconds = 169.966 FPS 849 frames in 5.001 seconds = 169.766 FPS 851 frames in 5.000 seconds = 170.200 FPS 849 frames in 5.000 seconds = 169.800 FPS 851 frames in 5.004 seconds = 170.064 FPS hans@sigaar:~> 1024x768 16 bit windowed: hans@sigaar:~> gears 5187 frames in 5.000 seconds = 1037.400 FPS 5267 frames in 5.000 seconds = 1053.400 FPS 5266 frames in 5.000 seconds = 1053.200 FPS 5266 frames in 5.000 seconds = 1053.200 FPS 5267 frames in 5.000 seconds = 1053.400 FPS 5278 frames in 5.000 seconds = 1055.600 FPS 5266 frames in 5.000 seconds = 1053.200 FPS 5263 frames in 5.000 seconds = 1052.600 FPS hans@sigaar:~> Thanks Hans