http://bugs.winehq.org/show_bug.cgi?id=8194
------- Additional Comments From stefandoesinger@gmx.at 2007-08-06 04:59 ------- You mentioned in your other bug that you are using an ati card. The binary driver has a known bug which overwrites some cpu registers which it shouldn't change. As a workaround you can add the following line to the driver's section in xorg.conf:
Option "UseFastTLS" "2"
Can you try that? If you are using the (reverse engineered) open source driver, try the binary fglrx driver.