I was just scanning through my task history, and came across something that seems odd. For this WU: http://www.primegrid.com/workunit.php?wuid=398122810, I got a timeout error after less than 7 hours. These tasks take about 10 hours to run on that PC. My event log doesn't go back far enough to see if I actually completed and returned that task, but I probably did. My computer very rarely have errors, and they're generally validate errors, not timeout errors. At that time I was running only PG, and I think only SR5 tasks, to help with the cleanup.
Any ideas why I might have received a timeout error after less than 7 hours on a 15 day task? Let me know if I can provide any more info that might be useful.