The apps that I downloaded from the app store will no longer open. The ones I have from Cydia work fine and so do the native apps like settings and calculator. Its just the ones that I got from the app store on my iphone. The apps store application even still works and I can go and download new apps and even the newest ones I downloaded this morning wont open. They open like they are loading and then it just goes right back to the home screen. Can someone tell me what is wrong and how I can fix it. I have already tried syncing, powering off and on, hard reset, and re-springing. This is a big problem and i need help!