This forum is only for reproducible bugs with csf and lfd (i.e. not iptables problems, lack of understanding how to use a feature, etc). Posts must be accompanied with full technical details of the problem and how it can be recreated. Any posts not adhering to this, or not considered bugs, will be moved to the General Discussion (csf) forum.
Which version of Fedora Core are you running? Be aware that any version of Fedora Core below v7 is no longer supported anymore which means you have to be running at least v7 or v8 now - one good reason you should never, ever, run FC on a production server.