I've had the Razr M since late October and have had no issues/problems until today. I usually can go from a full charge in the morning after charging all night and still have 40%-50% battery life remaining when I plug it in when I go to bed at night. I'm a very moderate user. A couple 3-5 minute phone calls per day. Limited text & email. Periodic peeks at Facebook. Light Words With Friends play. Today the phone lost battery life very rapidly and went from 65%-70% to 4% in about an hour. And the phone got hot. I shut it down and charged it back to 100%, and so far it seems to be holding battery power at a normal rate, and it no longer burns my hand when I hold it. But what the heck happened? And should I expect it to happen again?