(2011-05-20) Archos70 Restart Cycling Problem

My Archos70 has been annoying me lately where it suddenly reboots itself and then just keeps rebooting over and over. I think that forcing it to do a full shutdown, then booting it back up stops the cycle, but if I don't notice it I think it just keeps doing it forever.

The bigger question is what starts the process. It seems to happen mostly when I go out. I don't know whether it's a mechanical problem (loose connection) associated with moving it around, or whether it's associated with switching WiFi environments.

I'll try shutting off WiFi before I go out, and see if symptom stops.