http://bugs.winehq.org/show_bug.cgi?id=27156
--- Comment #34 from Evan Goers megatog615@gmail.com 2011-05-29 03:09:03 CDT --- This is still a problem in wine-1.3.21(actually, latest git). CounterStrike: Source and possibly every other Source engine game is affected. Seemingly at random, the mouse jumps in a way that you are instantly looking at the ground.