http://bugs.winehq.org/show_bug.cgi?id=31882
--- Comment #9 from Erich Hoover ehoover@mines.edu 2012-10-05 07:09:49 CDT --- (In reply to comment #8)
... I'm using libxcb 1.7-3 from Ubuntu 10.10 repository. Due to Bug comment #4 GyB is using libxcb-1.8.1-1.fc17.i686 and get the same backtrace.
You may want to download libxcb's git and try the most up-to-date version that includes the fix for Bug #31406. The backtrace is very similar, though not identical, for that issue.
GyB: could you give that a try as well?