http://bugs.winehq.org/show_bug.cgi?id=24234
--- Comment #4 from rig9919hd@gmail.com 2010-09-04 13:58:48 CDT --- (In reply to comment #3)
http://forum.winehq.org/viewtopic.php?t=8897 mentioned those errors, too, but they don't seem to have been bad in that case.
(It'd be interesting to hear if switching to an nvidia card fixes it, but it's probably unreasonable to ask you to borrow one and try it.)
In my case the mouse works just fine and the movies are not the only thing affected. Actual gameplay video is flickering.