For a long time MC on our HTPC would periodically crash. Probably averaged 2-3/week. Sometimes I would send logs in so JR could try to find the problem. They were always very responsive in trying to help. Often times I wouldn't bother. There didn't seem to be any pattern or consistency to the crashes.
Our HTPC is a 3 year old quad core with win7/32. We use it in our HT room for playback of audio and video and also use it to serve to 3 clients.
About a month ago it developed some serious OS problems, totally unrelated to MC. I finally did a total new OS install including installing a new C drive.
Since the new Win7 install I don't think we have had one crash! I don't have any idea why MC is so much more stable, but I know that a lot of stuff is no longer on the system: Old versions of MC, SageTV, other Media programs. Some of this stuff I deleted, but suspect that there were remnants of the installs still on the machine.
I do hope that I'm not reporting this too soon - don't want to jinx my good luck. But it does make a lot of sense to me that an occasional clean OS install can only be a good thing.
Cheers,
Rod