起動時に

/etc/rc: WARNING: $nfsuserd_enable is not set properly - see rc.conf(5).
/etc/rc: WARNING: $nfscbd_enable is not set properly - see rc.conf(5).
/etc/rc: WARNING: $gssd_enable is not set properly -see rc.conf(5).
check_startmsgs; not found

と表示されるのですが何が問題なんでしょうか?