I had one 2 nights ago, it was totally random. I was just like scanning thru my apps and all of sudden it went straight to the thunderbolt lightning strike and restarted
This happened to me two days ago. I think my was a random reboot because the phone went blank and I had to turn it back on. Really weird use to happen with my blackberry all the time but never with this phone.
I had to random SHUTDOWNS yesterday. Basically the battery was at half and the phone just shut itself off and the orange light went on. I powered it back up and a few minutes later the phone shut down again.
I had to take out the battery wait a few secs and then power the device on. Everything worked after that.