This has been discussed a lot
HERE but I won't lock this thread because I think it deserves further discussion. If the Mogul is plugged in to charge the Mogul will not wake up for alarms. When unplugged it has had problems for some people. I use my Mogul as my alarm clock so I need it to go of. I have been using GSAlarm for the past 3 mornings with the Mogul unplugged and it has worked every time. I have to charge the battery before I go to bed than set GSAlarm that is what I am doing for now but we need a better fix for this.