Meh. And now my Arc just spontaneously rebooted for the 3rd time today.

Guess I'd better remove CPU-Z, the only app I've installed in the last two weeks, though several have updated in that time (only Google apps, though). If removing it doesn't stop the reboots, then I will be saddened and VERY pissed that it's lasted only 8 months. :/
EDIT: Just had my 4th spontaneous reboot. :/ Really annoying. Currently updating to the last system update (avoided updating because people said there were problems). Probably won't help.
EDIT 2: And spontaneous reboot 5 less than 10 minutes after I finished the update and had rebooted again for good measure.