similar to bug 553134, krb5-libs creates /usr/share/man/man5/.k5identity.5.gz which rkhunter freaks out about.
This should have been fixed already: * Fri Nov 25 2011 Kevin Fenzi <kevin> - 1.3.8-11 - Add /usr/share/man/man5/.k5identity.5.gz to whitelisted hidden files. Do you have a /etc/rkhunter.conf.rpmnew laying around?
bah, yes. sorry.