http://bugs.winehq.org/show_bug.cgi?id=17750
--- Comment #7 from David davidsboogs@gmail.com 2009-04-26 18:04:55 --- On my system it is not "practically" - the games freeze hard. What model is your video card?
Also I confirm that this effects the Touhou Seirensen ~ Undefined Fantastic Object demo version 0.01a, and probably will the full game.
In addition, I tried upgrading my graphics drivers - and in doing so discovered that I had been using "ATI Proprietary Linux Driver Version Identifier:8.47.3" - which is now 8.50.3. It made no difference.