...there don't seem to be any other problems, but my phone app just shuts down after 2-3 seconds after opening it. No problem receivng calls, texting, or Internet. I am running Firmware 2.2.1 on the 3G iPhone. I had installed other apps through Cydia without any problems. I noticed the issue only after installing Winterboard (at which point the phone automatically rebooted). Removing the Winterboard application did not resolve the problem. Please help.. Thank you!!