13" MacBook, Late 2008, new battery won't hold charge longer than 2hours 40 minutes.

I have a 13" MacBook, late 2008 model.  Just purchased a new battery from Apple.  Fully charged, then full drained, fully charged again, battery will only last 2 hours and 40 minutes.

 

I have also noticed that my trackpad seems to JUMP about 1/2" from where I have the curser located.

 

Currently running 10.7.5 OS.

 

Any sugguestions would be greatly appreciated.

 

Thanks

Terry

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