I have this problem, especially with incoming phone calls and alarms. All of the buttons on the screen are unresponsive and the phone just rings and rings and rings until the caller quits or the voicemail takes the call. Then I can immediately return the call and talk normally. A similar thing happens with alarms. I have all OS updates and just a few apps. I'm pressed for time so I can't be specific right now about the apps. Things like Bounce, Mirror, none of which are running. In fact nothing is running at all. I have all apps closed and the phone is dormant. It wakes with the incoming calls and is unresponsive. It is *very* frustrating. I keep looking for a Nokia bug being filed about this problem. I just cannot believe that I am the only one having problems with unresponsive Accept/Reject buttons on incoming phone calls.
-- Don