You won't like what you see ... hopefully it's an easy fix.
Sorry for posting that here - didn't find a different contact quickly enough.
Michael. (off to bed)

Maybe you can give us a hint. All looks right to me at http://www.zenphoto.org/

strange, it's been fixed obviously - it got spammed with over 700 hidden viagra links. Seeable in textmode or with CSS disabled.

The fix is probably that the page is newley cached from time to time.

you're talking about WP-Super-Cache?

Yes, we use that.