wine users - Jul 2008 - Mouse Leaving Window

Hi there,
I have some problems stopping my mouse leaving the window.
It happens in nearly every game i tired (Stalker, Diablo2. Starcraft) but not in
Crimsonland. I have no idea what to do.

Of course i tried different settings with winecfg but nothing solved my problem.
I'm running Debian/Sid with a dualhead xorg.conf.

So if anyone got some ideas, let me know them :)