HELP All of the sudden the keyboard wants to keep popping up, or it wants to back up a screen like I hit the back button but I haven't touched a thing. Yesterday I was using the navagation and the keyboard kept popping up or it would back up a step in the directions. NOT fun when you trying to find a place. And today I was in another app and it just went crazy for a few seconds popping back and forth like my finger was laying on the screen, but I wasn't touching it. And just now I was on the home screen and the sttings menu popped up for a second then went away. I did just try and take the cover off to see if any dirt got in there, but I can't see any. HELP!!! My phone is one 2 weeks old