Did you use the closed source ati driver or the driver from Xorg / XFree86 ?
I have a ati card too, but the closed source ati driver doesn't work on my system (didn't run a fully 64bit linux system and the 32bit part of the closed source ati driver is for my system broken). I tested <img src="/ubbthreads/images/graemlins/div.gif" alt="" /> on linux with an ati graphic card only with the driver from Xorg (version 6.8.2).
If you use the closed source at driver it is possible for you the switch back to the driver from Xorg or XFree86 ?
Came your posted error messages from Wine or WineX (aka Cedega) ?
Do your use the DirectX mode for <img src="/ubbthreads/images/graemlins/div.gif" alt="" /> on linux, right ?
Please switch back to the DirectDraw or Software mode because this mods are faster an better developed as the DirectX mode !
