Hmmm, that sounds very very weird, a usermode program shouldn't be able to cause hard reboots like that. It must be a flaw somewhere in a device driver, although that sounds very weird as well... Which graphic card + driver version do you use,
Carol and
john_doe123? Firefox does allocate a fair amount of resources, so perhaps you have a graphics driver with a GDI resource bug or something? That'd be my best guess.
2.0.0.11 running stable here with "a bunch of" extensions, XP64 Pro, GF7600/163.75 drivers (and that's although I'm afraid those drivers are either pretty bugged, or my graphics card is going to die in the next few months).
If the problem persists try rolling back to a previous version and running that for a few days just to make sure it isn't an unrelated problem like faulty RAM.
It's been 100% stable here before and after UPXing the binaries.
-nosh
Heh, I wonder why you bother - it doesn't really make firefox start faster... But okay, it was already
discussed here.