The inetd.conf included in RH 6.1 includes entries for only telnet, finger, auth and daytime. From a usability perspective, this is a big step backward from the previous version. Ideally linuxconf would handle inetd configuration, but at the very least, useful services like ftp, pop and imap should be included (but commented out) in the default inetd.conf.
The default inetd.conf in Red Hat Linux is deliberately minimalistic to decrease the exposure to security problems (e.g. buffer overflow exploits in network daemons).