http://bugs.winehq.org/show_bug.cgi?id=25595
--- Comment #4 from Jerome Leclanche adys.wh@gmail.com 2010-12-22 21:50:44 CST --- (In reply to comment #3)
It is not a dupe of bug 22053. Did you read my description? Disabling Steam Community In-Game does not fix it, and this problem only happens with Source games, not ANY Steam game.
Try rm GameOverlay* once you are logged on steam, before launching the game.