I've had my iBook for around 10 months, at first the charger was fine but now after daily use it's very sensitive and when I plug it into my iBook it doesn't start charging, so I have to repeatedly take the charger back out and plug it in until it does start charging. But if I knock the wire or even just lightly touch it, the amber/green light goes off and it stops charging. This is beginning to bug me now, so I searched the apple store so I could buy a new one, and I had no luck. I have no idea what this cable is even called (I just refer to it as charger ) so could someone please tell me the name of it and/or give me a link to a site where I can buy a new one? Thanks. Has this ever happened to anyone else?