Andy, there was a large web attack on very many computers running the software that serves up this type of dynamic web page that the forum is,
add you own http and :// and www
theregister.co.uk/2010/06/09/mass_webpage_attack/
I think we can be pretty sure that was the problem, and we can also be pretty sure it was cleaned up right away by forkliftactions IT staff.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.