When your cd to the RPMS dir and do a
rpm -K --nogpg `ls *rpm`
Ther checking stops in the first XFree86 saying that it cant verify
the PGP signature.
I dont know if it applies to other rpms in the distribution.
all our new packages are GPG signed, not PGP signed.
you need to install our GPG and the Red Hat GPG key from the CD before you can
use GPG verification.