Which release of Fedora are you running on? If your system do logging, you may have syslog-ng installed. Fedora project also reports a new system logger which will be released with Fedora 8, called rsyslog. Anyway, can you verify the following?
rpm -q sysklogd syslog-ng rsyslog
Once you've found which logger is installed, you can find the configuration file by issuing
rpm -ql <package-name> | grep conf$
where <package-name> is one of the three above, the only ones that come in my mind now.