have also had this prob with vzw 8703. hasnt happened in a few weeks now, but has been going on for over a year. will randomly shut off and sometime happens several times a day. then go for weeks without an issue...

mine gets rebooted every few days as i charge two extra batteries on external charger and swap out (all OEM rim bats) and have tried using individual batteries for lengths of time to ensure not simple bat issue.

ive got the warranty thru vzw but never bothered to pursue it. since sept my BB has seen some road rash from a couple small accidents and i am sure they would likely blame the issues on that even though its been happening for much longer. figure ill either swap out near end of contract, of just get a newer model this fall or wait for the next model.

-trekuhl