If you are like me and loyal Linuxcong user you might have noticed that the web interface (http) stops working on FC5. I figured out the problem. The pam modules with Linuxconf are not compatible with Fedora Core 5. The fix is simple.
ln -s login linuxconf
ln -s login linuxconf-pair
This makes the code in login run for linuxconf. In theory it makes Linuxconf even stronger because it gives it LDAP compatibility. And it will help Linuxconf stay current with future changes.