For the 3rd time since I got my phone, my screen seems to be stuck at the favorites. I can't seem to get back to the home screen. All that is available for me to use are contacts, keypad, voicemail and another one I can't remember. I tried to press the home button once or twice and nothing happens. I try to power down the unit but it wouldn't turn off even after holding the on/off button for more than 30 seconds. It seems to be stuck at this favorite screen. So finally, I had to restore my iPhone and jailbreak it again in order to get things the way they were. Has anyone encountered this issue?