I've just recently bought an iPod touch 4g 64MB. When it sits in my docking station the charge icon flashes between charging and fully charged followed by the ' Charging not supported ' message. If I remove the ipod and re-dock its fine initially and then 5 minutes or an hour later it does it again. I've checked for debris in the docks connector, but all appears fine. The dock is a 'Made for ipod dock' that's been used for my old Touch 3g for over a year with no issues. I've tried a restore with no sucess. Any clues ?