1) The device ran out of battery the night before, and I charged it with a charger from an iPhone which was available were I was at the time. Put it in the charger when at home, using the charger from my Nokia N900, which I have been using all the time since I got the device.

2) Yes, I enabled it, connected to the device through ssh; thats all. Didn't do anything else than that.

3) The most recent - 10.0.1.12

4) No, the only thing I can think of; is that I pulled the battery out at some point without shutting the device down.