I have a new nano, just got it in Nov. Has worked great up until now. Just plugged it in to update and charge it and it is totally frozen, with the "lock" symbol displaying. It is unresponsive to changing the position of the hold switch and since it is locked, trying a hard reset does not work either. I have also tried plugging it in and restoring the software, but it will not mount or be recognized by itunes or the ipod updater. It is also not recognized by disk utility. I think my options at this point are to return it and get a new one, anyone have any other thoughts?