Hi all, I've been super happy with my iPhone until a few days ago. I don't have a bumper however I've taken good care of it and haven't dropped it. I wanted to know if anyone else has experienced a strange 'tapping' or 'clicking' noise when touching the glass panel or sometimes the frame of the iPhone 4. It feels like the front panel may be somewhat loose. It's after I remove my finger from the panel that the sound occurs, maybe due to the upward pulling force when removing it. Thanks!