http://bugs.winehq.org/show_bug.cgi?id=15297
--- Comment #7 from rankincj@yahoo.com 2008-09-15 09:05:51 --- (In reply to comment #5)
That's a sign of broken video/opengl drivers.
If that's true then they're only broken when Wine/WoW tries to use them. I also don't see how you can rule out Wine passing the Xserver either a garbage pointer, or a pointer to garbage memory.