For some reason my iBook just stopped charging a few hours ago. The apater ring is green when it's partially in but then as you push it in you hear a slight click and the light goes off, (the iBook doesn't charge either.) From the adapter there emits an on the beat click as well (not sure if that happens normally) when it's connected to the iBook. I've tried multiple outlets and taking the battery out btw. Has anyone seen this? Does anyone have any ideas? I don't even know if it's likely the adapter or the iBook. I'd be very greatful for any help.