[_sandman]

the fact that your gps was off goes with the fact that gps is trying to locate a signal and like mine - if it did not it would lock up and random reboot. im in my office and if the phone sits on one side of my desk thats not so much getting a signal it will search and search - so far this has happened at the same time each day - given that my (what i think) is my weather gps trying to locate where i am to update .

this may also be for other apps that use a location or gps update running in the background to those who are constantly changing area - like navigation OR another program that uses gps and like the android book says - apps are not always closed - they are doormate in the background which is why they pop up to "do their maintence"

and mine just rebooted hah! - with always on network CHECKED