[SOLVED] Page with dummy post at the bottom

I am getting pages where the bottom looks like this: (see attachment)

Seems to occur when I click on the title (link) of a post, which then appears on a page by itself, with forward/backward links both above and below, but in this case with a dummy post "xxx" and then an addition set of f/b links at the bottom.

Ring any bells for anyone?

Thanks, Eleanor
(Atahualpa 3.5.3, WP 3.0.5)