The following may or may not help. But if I understand you correctly it's on but just off doing something and there is no response. If this is true a quick way to get it back is to pull the battery. Hardly a solution but beats waiting 8 hours.


As for the reason. I had mine doing this a while back and it accidentally got cured when I change to a new (and larger, but just cause I wanted more room for songs) SD card. Seems there was something bad/wrong with the one I had in there before (that held the swap file) and it was causing some problems when the IT tried to swap out. You might try removing the swap file and then adding back after you change the internal and external SD cards around.

Second option. RMA. If you get lucky maybe Nokia will agree to an RMA and upgrade, for a small fee.