This sounds IDENTICAL to what I posted over here:
http://www.bonnevilleamerica.com/forums/...ge=0#Post354976Hrm. Guess it's time for a new battery... hey, at least it's an easy fix, right?
I'll let you know how it goes. Hopefully this will do the trick. (My battery is 3-5 years old, tho, so it makes more sense.)
--Jaeger