At first, I thought it was Exceed 8, but I'm running it elsewhere, and it's not crashing, so probably not.
Then, I thought it was Photoshop, but, see above.
Finally, after much finagling, I think I've figured it out to be the driver for the internal wireless card that this thing uses. How annoying. And, I can't seem to find any updated drivers for it. Hrm. I guess I should check Dell's site.
But, I have disabled the card, and I haven't had any crashing yet. (Yet.) (Knock on wood.)