[SOLVED] Comments are directed to a page that isn't there?

Hi everyone I have Atahualpa 3.4.1 and Wordpress 2.8.1

If anyone comments on my blog, the comment goes into moderation as it is supposed to do but they are redirected to a page that says:-

NOT Found
Sorry, but you are looking for something that isn't here.

If they post into, for example a post called "a quick trip back to Cumbria, they are redirected here.

http://chocolatebones.co.uk/kev/2009...e-1#comment-61

The comments do appear after moderation which is fine but the person who makes the comment has no idea it has been sent or excepted as they are sent to the strange page.
Please comment and you will see what I mean.

I have tried deactivating all plugins and has no effect, not sure of next steps to try.

Any help at all much appreciated

Kev