I used to rely on this screen to monitor reboots.
Looks like it's disabled in the 10.1 leak. (last reboot time---settings-->hardware)
Woke up this morning and found bedside mode off . That was usually the queue that I suffered a random Reboot that night.
I suspect I had a reboot, but now I wouldn't know how to verify it.
Posted via CB10
Edit: crackberry app not letting me upload the screen shots...sorry