http://bugs.winehq.org/show_bug.cgi?id=19982
--- Comment #57 from ray@pobox.co.uk 2009-10-04 08:07:41 --- (In reply to comment #55)
(From update of attachment 23529 [details]) This was already committed, though it doesn't fix the bug yet.
I think currently it fixes SetThreadAffinityMask() for the Main Thread, but not for any additional threads that are created with Windows API call CreateThread().