Well this just happened to me today.. i've had my Macbook pro for probably less than a year now, its feb 2008 model and today i just noticed that when i try to charge the battery it won't let me.. like right now its stuck on 67 percent and when i plug my outlet in the wall it just stays at 67 percent and doesn't charge it just says "Battery is not charging, power source =adapter".. does this mean that i have to replace the battery now or is it a problem if the mac itself.. thanks for reading!