http://bugs.winehq.org/show_bug.cgi?id=22903
--- Comment #7 from Peter Davies ultratwo@gmail.com 2010-06-12 09:38:50 --- Further investigation (with winedbg) shows they both segfault in /usr/lib/fglrx/dri/fglrx_dri.so
This indicates it might be driver issue.