my battery is messed up! I dunno what's happened to it. This is a brand new macbook, just about 2-3 weeks old, and the battery can do max 4 hours just browsing the web, and dimmed screen. this is not what apple claimed "6 hours". Yes I know 6 hours is probably just let it sit there and not doing anything, but max. 4 hours after 2-3 weeks of usage is unacceptable! I'm not running anything power-draining, just sitting here surfing the web and 'sleep' it for a while. can I do anything about it? I've done that battery correction thing, but it's not helping much. Can I take this back to apple and replace a new battery for free? the last time (loooong ago) I've taken my ipod mini for a battery replacement, they've charged me. my mb is 2.2ghz, 4gb ram and 120gb HD.