Hi Keith, sorry but I agree with Matthew Smith in his post (p3) that this isn't quite right. I've spent quite a lot of time poring over all this stuff and there is plenty wrong about the way Nick Smith and the govt are representing this report though!

I've written a rather lengthy piece on it at http://likeripplesonalake.wordpress.com/2009/08/06/3/ if anyone here is interested in reading more on it.