http://bugs.winehq.org/show_bug.cgi?id=31882
--- Comment #6 from Qian Hong fracting@gmail.com 2012-10-04 12:00:32 CDT --- (In reply to comment #5)
Yes, looks like another libxcb threading bug.
Its a bit difficult for me to write a libxcb-only test case to demo this bug, anyone have enough love to report this bug to the libxcb folks? ;-)