First, compliments on the great forum! I love it so far - have an install on a J1.5.17 site. But have one issue:
I would like to allow unregistered visitors to post but not edit posts.
Using permissions I have been able to gibe public abilitiy to create a topice, but then anyone can edit the topic. Can this be changed?
I would prefer that any post was not editable after posting, but public/guest posts should not be editable at all.
 - also, for public posting, there is nowhere to put a screen name, and the time of posting becomes the name. Seems like a fix is needed for that. (Although I realize I'm doing this on an old Joomla! site - maybe its not the same in more recent versions)