kvt (the KDE 'xterm') is missing from the updated RPM on updates.redhat.com. (Does this mean we get a -2 real soon now?!).
Bug 3649 has been closed because the problem was fixed sometime before the update RPM ftp://ftp.redhat.com/pub/redhat/linux/updates/6.0/en/os/i386/kdebase-1.1.2-11.i386.rpm This product is no longer supported by Red Hat, and users should look at upgrading to a newer version of Red Hat Linux.