I'm having the same probs as a few other people with spybot s&d crashing about a 1/4 of the way through a scan.
I've read the other posts and hoovered the fans and blew out the heat sink which I do on a weekly basis anyway and I've not long reseated the heatsink as well.
When Spybot restarts the PC the temp is only 44 degrees c.
I run video conversions at a constant 70 degrees c for 3-4 hours continuously no probs.
I've only ever had the need for 4 programs to keep my PC clean, they are Spybot S&D, Ad aware, Avast Anti virus and Zone alarm.
These have served me well for a while now.
Any ideas what else to use to detect these, any help appreciated.
Cheers, deeboi.