Upgraded to iOS 5.1 last night ... 10 seconds later, tried to get into Facebook app ... no launch ... restarted phone ... no launch of Facebook app ... then noticed that NO 3rd party apps would launch!!!!!! 2 hours on phone to Apple Support today ... and still no fix, having reset the phone 4 times and created three new apple ids! Cannot launch any new app (Apple or 3rd party) from the App store after installing, only the standard ones that came with the phone! Apple Support Australia to escalate back to the US! Anyone else had this??