My Dad has purchased me a new 20gb iPod for the PC for Christmas. I am not allowed to use the iPod fully until Christmas but I have already transferred some music onto it and updated it to 2.1. Since Im not allowed to use it regularly it sits in a cupboard without being touched. So I leave it for about a week and then I show it to a mate but I notice that the battery that was fully charged is now nearly flat. I know that no one is using it, so whats happened? Please Help!