it seems to be an easy thing to do, but sometimes my alarm will sound when I set it and sometimes it will not. Is anyone else having this problem? I go into the "alarm" screen and set the time, the day(s) and choose "done" and get the message at the bottom that says "this alarm is set for ___ minutes/hours from now..." and I think I have it done correctly, but then it doesn't go off (sometimes...) HELP!! I use the alarm on my phone to get up for work and all kinds of things!!!