I just updated a few apps through Rock. Normally the phone resprings and just goes to the lockscreen but this time it just went black. If I hold the on/off button the apple logo comes up and goes away after a few seconds. If I hold the on/off button and the home button the same thing happens. The springboard never comes up. The simple fix would be to just restore but the phone won't stay on. Has anyone seen anything like this happen before?