Use SimplePie RSS reader for News and Security panes
Replaces non-functioning, derelict MagpieRSS
Updates for FluxBB in Clipper forums
Typical strings for Tools > Configuration > Interface & Features:

RSS News Feed
http://www.clippercms.com/forum/extern.php?action=feed&fid=3,31&type=rss&order=posted

RSS Security Feed
http://www.clippercms.com/forum/extern.php?action=feed&fid=22&type=rss&order=posted