http://bugs.winehq.org/show_bug.cgi?id=13251
--- Comment #18 from Dmitry Grigoriev mail@dimgel.ru 2011-10-28 09:46:57 CDT --- It's already OK in 1.3.27 (Gentoo amd64), sorry I forgot to report. All Steam games I have (including HL2*, L4D2, Rage, Dragon Age) work stable and fine.
Well, except desktop mouse pointer is shown instead of game's one (pretty annoying in Dragon Age), but it's another bug. :)