the bottom right light doesnt light up. i didnt buy additional applecare, but yes it is less than a year old. i bought it in august of 2006. this will be the fourth time it is being sent back to the depot if it needs repair. the depot messed up the first time and replaced something else. the second time they fixed the alignment problem, but they messed up my cd drive and scratched my macbook. the third time they fixed everything nicely and everything worked until this battery problem.