Anyone else finding their new Core i5/i7 MBPs much poorer in terms of battery life than the previous generation? I have the base model 2.4Ghz Core i5 15". I just took the power cable out (full battery), have 4 safari windows open, wifi on and screen brightness at 4 below maximum. The battery meter is showing just under 5 hours life. This is way off the mark with what Apple states AND the previous gen. I know apple numbers are usually slightly ahead of real world figures, but I have a previous gen 15" and remember easily getting more life out of the battery than this. I am going to try calibrating but surely I'm not alone here?