Since IBM didn't release a driver fixing the problem for my ThinkPad A30 (company provided, I'll never buy that if I can chose), I was forced to disable all DirectX related hardware acceleration (no overlay, almost all software rendering...), because every website can have an applet using Swing and crash the computer while quitting the navigator.

By the way, IBM never solved my problem with their driver'o matic program. So both professionally and personally I've only encountered at their support clueless people who don't hesitate to reply, but bring no solution at all (not even proposals...)