My iPhone screen shut off and the phone has been vibrating for the last hour. None of the buttons work...holding down the Power+Home buttons does nothing, connecting it to the computer does nothing. The phone has gotten very hot from the constant vibrating. I did the jailbreak earlier. Only installed SBSettings and did an update in Cydia that it said was available. That's it. I did also have AdMob ads in Settings for some reason so obviously something else got installed on there but how/when?