Hi guys, I recently used the newest pwnage tool to jailbreak my iPhone 3G. I am on AT&T so I didn't need to unlock it. After I completed the jailbreak I downloaded a bunch of apps from Cydia and then tried to get Pandora and a couple of other apps from the App Store. They downloaded just fine, but when you try to open them they close within seconds. I searched this forum and the internet for a fix for this and the only thing I found was to "deauthorize" my computer from iTunes, Sync the iPhone, "authorize" from iTunes and sync the iPhone again. It worked for some people, but not me. Any ideas? Also, for some reason my iPhone screen stays lit after I am finished using it and I have to manually hit the power button to turn off the screen. Any ideas on that? Is it because I am running Backgrounder? Thanks for your help!