I have an installation of WP Forum server 1.7.5 on my WordPress website. I have 'Registration required to post' and 'Use Captcha for unregistered users' both ticked in the settings (although I assume the 2nd should be redundant if the first is ticked...)
However, my forum is getting spammed with junk posts, mostly from the 'guest' user. When on the forum home page, it says 'Welcome Guest, posting in this forum requires registration' but somehow spammers are getting around this.
I have searched and don't see other people reporting this problem, so hopefully I have done something wrong and some kind person can help me out ;-)
PS: Website is at http://www.fightingstrokes.org/forum/