The guest account is set for read only, but they are still able to post. This happens with both IE and Firefox/Netscape.

I also noticed that if I change the settings for guest to no access for designated forums, they do not grab for IE. The forums I set for no access still are listed and the guest is able to post. But in Firefox and Netscape, the forums that were changed to no access did disappear from the list, but the user is still able to post in the read only fourms that were still listed.