My iPod has just been collected by UPS. It is going back to apple to get fixed. It is reseting when you plug in the head phones firmly. If you do not plug the headphones in firmly you get intermittent sound. I suspect something is cracked or making a bad connection. After the iPod has restarted then you get an out of power screen. If you force a soft reset the power comes back and it works as normal for another while.