I have a 3 week old MBP. completely stock since my fiancee uses it while I use my 15" i7. the battery life on this thing SUCKS. We get roughly 3-5 hrs out of it before it goes dead. with 30-50% brightness. seems like my 15" gets twice the battery length this is with WIFI on, only browsing the internet. bluetooth is off, no music, light flash ( she mostly looks at facebook, email, and wedding stuff ) any ideas?