wine users - May 2010 - TF2 issues

Playing tf2, most of the time it runs very smoothly in fullscreen, and even in
windowed, but occasionally, for a few frames, it either cuts to a distorted view
of my virtual desktop (when I'm using one) or just random fluorescent colors
set at right angles to each other. Anyone know what is happening? I can't
take screens because, well, it's not taking them. Solutions appreciated!

Using ATI Radeon 3400 series, Catalyst 10.4

AMD Turion X2 Neo 64 1.6 ghz

4 gigs of ram.