does it say this device is not ment to work with the iPhone or summtin` like that? if so, i had the same problem, and i tried a lot of things but nothing seemd to work, until i plugged my headphones in and the problem went away for a few days then it came back, plugged the headphones again. and now it`s gone, it`s been almoust 2 months since the messege is gone
it happens when i'm not connected to the dock or a charger. when i went to show it them(genius bar), the problem didn't occur, so it made me look stupid and crazy then after 20 minutes of leaving the store, it came back. annoying..