I JB my iPhone, and have just a few common things installed, like CCSettings, Carrier Pigeon, SwipeSelection, Tabless, TransparentDock. What would happen is, I would be in an app, say Facebook for example, and I would be speaking with my GF, and out of nowhere, I would get the white Apple screen, it would go dark, then go to the lock screen, all within about 15 seconds. Im not sure if its an JB app that is doing it, so Im hoping to get some suggestions. I dont really want to restore the phone, but if it comes down to that, then I guess that is what I will do.