my bb ran out of battery completely on a night out just before the last bit of power completely drained a small message came up on the screen saying app error
i think its working ok but wont play any media files whilst in browser, youtube vids will play for 1sec then stop.
Once charged, do a battery pull and see if that fixes the issue. If not, then I think an OS reload as M-M said above it the solution. Make sure you have a good back up first however.