Louis Wu at HBO pointed out a BBC article wherein is mentioned some show-stopping bugs in PC Halo that apparently are causing BSODs in Windows XP, which they claim is a rare occurrence. Interesting. Apparently there are people having such problems, you can read about it in the Gearbox Technical Forum; there is one particularly long thread on BSODs that might be helpful for those having this problem.UPDATE: There are several mentions of this bug in the recently-opened The Maw forum at Bungie.net as well.