I am a wireless administrator for a medium sized company and have a user that got the Droid last week. Three/four times now, his phone has shut down and become unresponsive following a long (30 min plus) phone call, requiring him to pull the battery to reset the phone. The last time this happened, the phone would not turn on until he plugged it into the wall charger. The phone showed a full charge prior to the long conversation that triggered this latest event. Any ideas on this? Should I instruct him to return the phone?