Pa meni recimo Galarm pali ekran minutu prije ponoci...Na njihovoj stranici ima i objasnjenje kako to iskljuciti, ali samo vezano za galarm:

Don't wakeup at midnight

Because of the Windows alarm bug, G-Alarm wakes the device at midnight so Windows Mobile can rebuild its notification queue. If you turn this off by changing or adding following registry value, it may happen that an alarm doesn't go off.