HELP! I have an HTC Tattoo - have had it since February and love it. The last 2 days the alarm has gone off, but there has been no sound, or vibrate when it does. The screen just lights up and looks as though the alarm is going off. Luckily i always wake up before my alarm goes off, but this is very frustrating as I don't want to sleep late and end up being late for work. Any one else having this problem?