desktop rez changes/can't access taskbar after playing game w/Wine

[Monkeyman]

I just installed Wine and was able to play a Windows (.exe file) game (nothing big).  When I exited the game, I found that the desktop resolution had changed (would have been good had I been 50 feet away ) and I couldn't access the taskbar.  I had to reboot to get back to normal.  What would have caused this and how can I avoid it in the future?  I have a few things I'd like to run using Wine.

Thanks!