I'm trying to figure out whether or not this is a common problem and people just deal with it. My Pocket BSODs or reboots, reliably, at boot -- right about when the Windows login screen is presented. It then does it maybe one more time, and then stops, and is stable for the rest of the time it's in use. This makes me wonder if the problem is thermal -- poor contact with the heatsink when the system is cold, but once things heat up enough for metal to expand, contact improves and the temperature stabilizes.