Attached is a screenshot from the game Crack Attack!
(http://aluminumangel.org/attack/). Several of the blocks (highlighted in red
boxes) in the game are miscolored. This occurs regularly throughout gameplay,
but not when software rendering or ATI's official driver are used.
ATI FireGL 8800, xorg-x11-6.7.0-5 on FC2/AMD64.
Created attachment 602 [details]
crack attack screenshot
This sounds and looks like a problem with materials, which was fixed ages ago
(but didn't make it into XFree 4.4 or Xorg 6.7). Could you try with Xorg CVS or
a dri driver snapshot?
Can no longer reproduce with a recent Xorg CVS snapshot