I haven't used my RPM for some time. When i was using it again with my 15' MacBook Pro (Unibody, OS 10.6.8) and running itunes plus VLC the computer frequently crashes -> beeping sound, screen freeze - hard power off and reboot is the only thing that helps.

The problem source might as well be an external drives conected by USB but i don't think so. Anyway i will try to reproduce the problem without any external devices connected.

I have upgraded the drivers form RMEs website but the problem persists. Any suggestions?