My Battery status doesn't change on my MacBook Pro and then dies

Hi, I have a MacBook Pro that is maybe a year and a half old and is running Snow Leopard. Just recently (only yesterday) I realized that the batter status widget in the menu bar is lying to me. It always reads 3:35 (95%). And then it dies without a warning of low battery. It is extremely annoying and if not for the auto-recover function of Word, I would've had to rewrite an essay yesterday. Once I plug in the charger, the computer recharges. I think everything is working, it's just that the computer isn't notifying me about the battery status.
Thanks in advance!
~Chet

Apple Portables: Low power warning does not appear while running off of the battery
Using Mac OSX v10.6
Consider updating to 10.6.8

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