A new app is downloadable from OVI Store for the Nokia N900.

It's Alarm Maemo, more details here: http://store.ovi.com/content/36033

It's a very simple (and useless) alarm: you can activate a motion sensor induced alarm, and when someone move your phone it starts to sound like crazy. You can stop the alarm writing your PIN in the blocked screen.

OR, simply press ctrl+backspace and close the app without entering any PIN code... WTF

Just another useless app.