here i test some others way and here i found something weird...

-i set an alarm for the next 10 minutes at 17:00
-the gray box wait appear and disappear...
-i close the application...
-i reboot my n8x0...

=at 16:59 the application open 1 minute before the alarm setting time...
=at 17:00 the alarm ring perfectly at the rigth times

woot

but if i dont reboot after alarm is set at 17:00 :

-i close after setting...
-i waiting...
-at 17:00 the application open at the rigth times of the alarm's be set
-at 17:02 the alarm finaly ring (2 minutes lately)


so in fact...when we rebooting after set alarm = All work perfectly all the way

but when i dont rebooting the device...the alarm is 2 minutes late (when the application be close after setting alarm)

But when you dont close the application after setting alarm...all work perfectly
i follow developements here tonite