problem updating RH9

[paul at pbenjamin.net]

Hi. I followed the instructions at
http://www.fedoralegacy.org/docs/yum-rh9.php

but when I do yum update I get:
...
[update: mkisofs 8:2.0-11.9.1.i386]
[update: sendmail-cf 8.12.8-9.90.i386]
[update: XFree86-font-utils 4.3.0-2.90.55.i386]
Is this ok [y/N]: y
Getting samba-client-2.2.7a-8.9.0.i386.rpm
warning: rpmts_HdrFromFdno: V3 DSA signature: NOKEY, key ID db42a60e
Error: Could not find the GPG Key necessary to validate pkg
/var/cache/yum/updates/packages/samba-client-2.2.7a-8.9.0.i386.rpm
Error: You may want to run yum clean or remove the file:
 /var/cache/yum/updates/packages/samba-client-2.2.7a-8.9.0.i386.rpm
Error: You may also check that you have the correct GPG keys installed


rpm -qa
gives:
gpg-pubkey-731002fa-400b9109
gpg-pubkey-731002fa-400b9109
gpg-pubkey-731002fa-400b9109
gpg-pubkey-731002fa-400b9109
gpg-pubkey-731002fa-400b9109

How do I fix this?

Thanks.

Paul Benjamin