Hi Mark,
Did you ever manage to solve the problem with your system crashing with bitcomet? If possible, please can you let me know at peter@petermachen.com. It's been driving me mad for ages. It also crashes with other p2p clients but much less with bitcomet. It also happened on my old pc, and straight away on a brand new laptop. I think XP service pack 2 is the villain but an un upgrade to sp 3 hasn't really helped.
I'd be very greatful if you'd share any possible solution with me.
Thanks
-peter machen