Have installed latest system update with no 3rd party apps. Now, if I select 'Switch Off' in Device Mode (after pressing power button), the unit powers down but later will power back on without any further input from me. I have turned off automatic RSS updates but do have the GMail client installed.
The most problematic issue is that the screen is then active and who knows what a random input while in my pocket might generate! Ideas?
Couple of other anomalies with latest update, but will save for later.
Thank you!!

Search for "hidden alarm" or "ghost alarm"