http://bugs.winehq.org/show_bug.cgi?id=23578
--- Comment #33 from Dave acct-winehq@slicer.ca 2010-07-12 22:29:32 --- (In reply to comment #31)
Switching windows version to XP in wine config seems to stop this problem. Can anyone else confirm this?
Nope here too, I get it in XP mode (and all other modes in which Steam works).