So I was curious how much real-world usage I was getting. Using battery logger I'm generally getting 6-7 hours of usage going from 100% to 0% battery. Yes the brightness is up about 2/3rds but I'm not doing anything intensive... Mainly Keynote, iTunes, Safari, etc.... Is this consistent with what you're getting??? Much lower than Apple's claim of 9 hours. Another reason I'm returning it to get my refurbed MBA.