My atrix has been locked and in my pocket and I'll get a call. I'll try to "slide" the answer icon to unlock/answer, however it doesn't respond. The phone just seems frozen and doesn't react to anything. The lock button on top doesn't do anything, the answer "slide" motion doesn't answer it and the "end call" slide motion doesn't end the call. It is just completely frozen until I miss the call. Anyone experience this?