I was just in the middle of a call when suddenly the phone just started vibrating as if I had another call. I pulled the phone away to look at it but there was no other call or any othernotification that I could see. The other person could hear the vibrating too. I hung up and it was still vibrating nonstop! For almost a full minute Nothing would make it stop so I had to turn the phone off and on again. After that it was fine but this worries me. Has this happened to anyone else? btw its so cool that I'm sending this from my pre!