Hi Guys, So I finally got my MBP and loving it! Only problem im facing is the battery life... What is the actual life you get from normal use? I know apple claims 8 hours but is that true? Ive calibrated my battery, And charged/drained it a few times...However i can still only get 3-4 hours on it... Using Interl Graphics card, Blue tooth off, Wifi on, Screen brightness MAX, and doing light jobs, like email, skype...surfing the web... Is my battery busted? Or is this normal?