My late 2008 13" unibody Macbook has just started giving me a bit of trouble. The power adapter feeds the Macbook, but next to the battery icon at the top it says 'not charging'. Light on the magsafe is a very dim green. When I pull it, battery says '12%', so it is definitely not fully charged. Quick inspection hasn't revealed any obvious defects with the magsafe or power adapter. edit: at the risk of answering my own thread: when I fiddle with the cable end going into the magsafe, the light goes from dim green to flickering orange. This might be what Apple call 'strain relief issues'