Very weird problems have been creeping up on my iP4 since the other day. First, the obligatory stats: iP4 running iOS 4.0.1 and jailbroken. An odd text message came through a few days ago that said "Unknown" and then my phone restarted. Since then, it's restarted out of the blue for no reason. And just now, I was on a call, heard silence because I thought I hit mute with my face and realized my phone went into Safe Mode and I had to restart. Anyone else experiencing this or have suggestions?