http://bugs.winehq.org/show_bug.cgi?id=24182
--- Comment #5 from Vincent Povirk madewokherd@gmail.com 2010-09-16 15:36:34 CDT --- err:ntdll:RtlpWaitForCriticalSection section 0x7bca5884 "loader.c: loader_section" wait timed out in thread 001d, blocked by 001f, retrying (60 sec) wine: Critical section 7bca5884 wait failed at address 0x7bc3590b (thread 001d), starting debugger...
A backtrace may not be very useful, since it won't tell us why the other thread has already grabbed this lock. I would suggest getting a +relay,+tid,+loader log.