Just been on the mod forum and the owner of the site posted this:
"It's a big problem guys and it's one in which they have me defeated - if they want me defeated. The site has been attacked several times tonight from thousands of different connections (proper DDOS) - and quite frankly we are far too small an organisation to do anything about it. Professionally, I work for a company now who's whole business is online, and we spend about 100k per year on similar protection to prevent similar attacks - which of course not606 could never afford for this site.
I'm lost and disheartened at this stage, but I'm still trying to find a solution."
Hope this helps explain the problems we are having. All caused by some nerdy individual/s trying to be clever!