New PB 17in DDR2 - Remaining Power Fluctuates Wildly

Got one of the new Powerbooks - so far rather satisfied - but one thing I am noticing is that the "remaining battery power" (displayed in hours/minutes) is fluctuating really wildly.
With a full charge I'm seeing 6:27 remaining (wow I never even got over 2hr with my 1st gen Aluminum G4 15in) but then every once in awhile I look and it says 4 hours-something, or 3-hours-something, then one time I looked and it said I had over 9 hours remaining! This is all in the same hour of use. Crazy huh?
I haven't benchmarked it but I'm guessing I'm getting about 3-4 hours out of this battery (and I haven't changed any of my Energy settings since I bought this thing, so it's at the defaults.)
Anyway, I'm curious if anyone else is seeing this type if issue. Seems like in the past Apple has in many instances put out patches for "battery remaining" problems. So maybe this is yet another one of those.

Seems like it doesn't fluctuate as much now, sticks within the 3-4 hour range, which personally after having the 1st gen Aluminum PB, i'm pretty happy with (I only got like an hour out of my first PB). Maybe something in the hardware has to warm up once it's fresh out of the box - this really only happened the first day ...

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