Ok, I know I wasn't going to get the 10 hours that Apple brags, but I was kinda hoping it would at least be 6-7. So I decided to finally test the battery today (I did calibrate it by powering it to full, draining the battery, and after more than 5 hours rest i charged it to full again, using it during time). First it shocked me but then I rememberd I had Sims 3 (just got it today) running in the background and I remember some one saying that game sux battery (it has anywhere from 1-3 hours to play Sims). So I turned it off. Right now battery is at 85%, with brightness to half, wifi on, using Firefox and terminal, and it's telling me anywhere from 4 hours 20 minutes to (right now) it said 5 hours (it does tend to change). Oh, and how much life it tells me it has jumps around a lot. Like 2 minutes ago it was saying 5 hours, a few minutes before that it was saying 4 hours and 23 minutes. And now I just turned off bluetooth and it went to four hours 20 minutes. So I checked what cocout battery said and it told me I had 94% capacity on this battery (I mean the battery is supposedly now only able to do 94% of its capacity). Do you think maybe I calibrated it wrong? I let it drain while I was at work so I wasn't sure when it went off so I waited five hours after I got back from work to plug it in and use it again. And anytime it was powered in I used it (the instructions said I could). Or should I be worried?