MBP C2D battery issue...bad battery?

[MSD401]

I have had my new MBP for about three weeks.... I calibrated the battery correctly when I first received the computer but suddenly i am having all sorts of issues... the battery seems to be drained at an amazing rate of speed i have lost 10% points in about 10 mins...i have made no changes to the power settings and bluetooth is off.... on my flight home the other day it seemed to reset its self (ie when in went all the way down to zero% it calculated back and lasted nearly 3 more hours...so i thought i was ok.. then again yesterday after a full charge the night prior i ran into the same issue after about an hour of use....so i recalibrated again last night...charge 2 hours... use til it sleeps....sleep for 5 hours....full recharge... hoping that it that would be the solution... just in the time it took to write this post i have got from 85 to 59 %.... with the brightness nearly all the way down... could i have a bad battery or is there something else i should try... i wont dare attempt to get near an apple store tommorrow... any help would be awesome.....THANKS

EDIT:
these are the excact instructions i have used to calibrate the battery
http://docs.info.apple.com/article.html?path=Mac/10.4/en/mh2339.html

Update:
It just went all the way down to 37 then jumped up to 88....what in the world is going on...?

 

[wildmac]

I have had my new MBP for about three weeks.... I calibrated the battery correctly when I first received the computer but suddenly i am having all sorts of issues... the battery seems to be drained at an amazing rate of speed i have lost 10% points in about 10 mins...i have made no changes to the power settings and bluetooth is off.... on my flight home the other day it seemed to reset its self (ie when in went all the way down to zero% it calculated back and lasted nearly 3 more hours...so i thought i was ok.. then again yesterday after a full charge the night prior i ran into the same issue after about an hour of use....so i recalibrated again last night...charge 2 hours... use til it sleeps....sleep for 5 hours....full recharge... hoping that it that would be the solution... just in the time it took to write this post i have got from 85 to 59 %.... with the brightness nearly all the way down... could i have a bad battery or is there something else i should try... i wont dare attempt to get near an apple store tommorrow... any help would be awesome.....THANKS

EDIT:
these are the excact instructions i have used to calibrate the battery
http://docs.info.apple.com/article.html?path=Mac/10.4/en/mh2339.html

Update:
It just went all the way down to 37 then jumped up to 88....what in the world is going on...?

Sounds like it could be the battery... or a connection issue to. Sounds like a trip to the Apple store is in order... remember, Black Friday deals...