I have updated the forum to the latest version, some time ago. As far as anti spam regulations go, the CAPTCHA option during registration has been set to the highest level. But as chronozphere said, that does not stop spammers anymore. We are getting around 5-7 new registrants a day at the moment, and while I realize many are potential spammers, checking them all takes quite a bit of time, something I don't always have. (New accounts have to get authorized btw)

About a week ago I installed a tool that checks name/ip/email against a known spammers db. It automatically marks around 50-75% of the new users, which is quite a bit IMO.