http://bugs.winehq.org/show_bug.cgi?id=28473
--- Comment #4 from Damjan Jovanovic damjan.jov@gmail.com 2011-10-03 03:09:57 CDT --- It looks like the GUI thread no longer exists by the time you run "bt all"?
Can you please attach a "bt all" taken during normal running of uTorrent, before it crashes? It might be useful to compare them.