http://bugs.winehq.org/show_bug.cgi?id=14394
--- Comment #25 from Patrick McFarland diablod3@gmail.com 2010-08-01 07:30:46 --- I have recently tested Cat 10.7 and Wine 1.2. Portal and TF2 still randomly crash, graphics settings and resolution still have no effect on the bug, however it seems to take longer now.
On the flip side, the new Steam client seems to be less pathological than before.