I am trying to reproduce this problem to give more information, but after going to the release version of 1.5, I've noticed that Xolox quits and leaves no trace. I can't tell you how long it runs before this happens, because I leave Xolox running on my computer overnight. WHen I leave, it is running. When I return in the morning. Xolox is not running. Does Xolox leave messages to the system event log?

XP Pro (no service packs), 512 mB of memory, not an ultrapeer.