Hi - Been loving my new DHD however have this intermittent problem when making a phonecall all i get is a single beep and 'call ending' message. Today while outdoors it just refused to connect but working ok now. It rings once at the receiver then cuts off so I was told. I have plenty of signal and the person I'm calling can call me back after getting the one ring and wondering whats going on after the I've tried several times! On Vodafone Any ideas?