Installing imap-4.5-3 rpm on an intel version of RedHat v6.0 does not uncomment the imapd, ipop2d, and ipop3d services in /etc/inetd.conf. While this might not be considered a bug to some, previous versions of redhat have always uncommented these services after installing the imap/pop server.
Automatically uncommenting inetd entries for imap, ipop3 and ipop2 needlessly (only mail servers should run these services) expose Red Hat customers to imap security holes.