Just had my first blue screen in a few days. I've attached the new dump. The error that appeared on the screen said MEMORY_MANAGEMENT, or something like that, this time instead of the DRIVER_IRQ_NOT_LESS_OR_EQUAL I was getting before. Not sure if that will provide any new insight into the source of the problem though.
After your last post I tried to update my video card driver but the ATI client pops up a message saying I need to get driver updates from my laptop manufacturer instead. Toshiba hasnt released an updated version of my video card driver so I don't think there's anything else I can do at the moment.
Anyway, hopefully there's some new information in this dump. *sigh*