I got my iPhone 3G last week and i love it. but today i noticed something weird my phone would stop charging at a certain point and lose charge till it was dead. I changed the usb port on my iMac, tried the AC adapter no luck. I then end up restoring it to factory defaults didnt go from a backup and now when i try to sync i get the "cant sync iphone 3G Disk cant be found" I just restored it!!! how can you not find it!! i Still get the same battery issue as well. Should i take it into the genius bar for an exchange??