i have a unibody macbook pro 2.4 with a 250gig 7200rpm HD, and it makes no point putting it to sleep because the battery looses power significantly. Last night i closed the laptop right after disconnecting the power cable and battery being fully charged, the status light begun pulsating like its supposed to, but a couple hours later, when i open the laptop i realised the battery was down to 90% already. It's like the laptop never went to sleep? thats what the battery would have been if it wasnt asleep/lightly used during that period of time. I really need help as to what to do. I can't be shutting down the laptop every time or be a slave to a power cord. Thanks.