I have a MacBook late 2008, bought in Mar 2009. Until last day worked it perfectly, the battery after 130 cycles worked cca. 3,5-4 Hours with a charging. Yesterday I noticed that the LED doesn't turn orange from green . I tried to unplug the charger and plug in again, but after several attempt the LED falled dead. The battery's charge was 46% at the evening, I keeped plugged in the power adapter for the night. In the morning the battery's charging reached 76%, but no more (the indicator LED was constantly turned off). Of course I checked the Magsafe adaptor, which is working fine with my other macbook (pro).
I took my computer to an Apple Authorized Service today. They checked first the battery and said OK for that. They continued the examination, tried to replace the macbook's magsafe connector, but shortly found the main board dead. I'm very frustrated since my macbook isn't 2 years old yet and the estimated repair cost may reach 5-600 USD, which is close to or over the machine's current value.