Hi Simon, I have to agree, I think your battery is toast. I know I had to replace mine a year ago. Enjoyed your website, left a comment on the supercool x shortcut. I am about to swap out the top case (cracked) with a new one. Hopefully this will also quiet down the new superdrive which i s quite noisy, and doesn't fit quite right. (I had given up trying to get it to fit - yes it was the correct superdrive- and had it professionally installed.) Any thoughts on swapping cases? Anything to look out for? Kent "A person who won't read has no advantage over one that can't read." - Mark Twain "Outside of a dog, a book is man's best friend. Inside of a dog, it's too dark to read". -Groucho Marx