macbook pro 2010 15" Hires matte 2.4ghz i5 750gb 7200rpm Ive never been impressed w this configurations battery life. I never get 4hours out of it. with lion i get 3:20hours with just surfing. when i had the 320gb 5400rpm it came with. I was getting around 5hrs. anybody has the same config that i have? how are you doing with batt life?