I Have had this issue with the Blue&Me a couple of times and with the USB as well. I use a very old Nokia phone, 5800, but the pairing with B&M is amazing. But a couple of times the B&M disconnected in the long drive and did not get connected until I stopped and restarted the car. In case of the USB, the ipod stopped playing in between. Had to pull out the USB and reinsert for it to play. What might be the problem? An clue?