Z10's reset itself since updating Calculator and Compass apps

I updated them last night and this morning my phone's been acting really weird. Music wouldn't show up in the native app so I had to restart it using the standard method (holding down the power key for a second or two and hitting the restart key). It started back up but the music still wasn't there. So I restarted again. Second time lucky? Not so much. This time all ny apps jumped out of their folders and everything's been reset. What's happened here? The order's been moved and it's really annoyed me. Why's this happened?

Posted via CB10

Yes, it happened with me too.... there was a reboot with my Z10... but I didn't see any effect on my Apps!