the guys over at rage3d say they have no probs with 9700 and 9500 cards running 1280x960. they might have fixed it with the 9000 cards too since its new. guess its just for the older cards. that sux
tapir: 640x480, 800x600, 1024x768, 1152x864, 1280x960, 1600x1200 all are 4:3 ratios which is the perfect aspect ratio for computer monitors.
1280x1024 a 5:4 ratio. use your calculator if you don't believe me. thats why people with 19" monitors use 1280x960 instead of 1280x1024.