I turned off my iPhone 4 on 5.0b4 jailbroken to let it reboot, and started to do what I always do to reboot my phone tethered. I have redsn0w all loaded up and ready to go, but no matter how long I hold the power and home buttons together the phone never hard reboots, it just stays at the Apple logo forever. I've held it for about 2 minutes max, and nothing. This is plugged in and not plugged in. Has anybody had this problem?