[rhn-users] failed kerberos update

[RedHat <RedHat eha no-ip org>]

i have 3 systems on rhn, 2 of which are fully updated without ever having experienced an update problem. the other computer has updated all new packages for months, except one: krb5-server 1.2.7. I get the error "Test install failed because of package conflicts: file /usr/kerberos/bin/sclient from install of krb5-server-1.2.7-14 conflicts with file from package krb5-devel-1.2.7-8"

as far as i know, none of my systems uses kerberos, but this one computer is constantly stuck with the "you need available updates" icon in the panel. is there some way to permanently ignore this package, or update it like my 2 other computers did?