After upgrading to Xcode 5, after compiling and executing an application, the screen appears dimmed and doesn't react to tap and pan gestures, both on a real device and simulator. Other similar apps compile and execute fine on iPhone. Anyway, it is not completely blocked. It's still responsive to Game Center, iCloud and rotation events. Strangely, it works fine on iPad.
Deployment target is set to 6.1.
Any hint?