sysquery: findns error (NXDOMAIN) on localhost?

Hello,

I´m running Bind 8.24 on a SuSE 8.0 machine. I always get this message:

May 26 14:05:57 mail named[2785]: sysquery: findns error (NXDOMAIN) on
localhost?
May 26 14:06:07 mail last message repeated 5 times

What does this mean?? Whats wrong:

My /etc/named.conf

##############
## named.conf - configuration for bind
#
# Generated automatically by bindconf, alchemist et al.

options {
        directory "/var/named/";
};

zone  "." {
        type hint;
        file  "named.ca";
};

zone  "0.0.127.in-addr.arpa" {
        type master;
        file  "0.0.127.in-addr.arpa.zone";
};

zone  "localhost" {
        type master;
        file  "localhost.zone";
};

zone  "193.158.75.192.in-addr.arpa" {
        type master;
        file  "193.158.75.192.in-addr.arpa.zone";
};

zone  "bildungswerk-clp.de" {
        type master;
        file  "bildungswerk-clp.de.zone";
};
###############

/var/named/localhost.zone

##############
$TTL 1d
localhost. IN SOA ns.bildungswerk-clp.de. admin.bildungswerk-clp.de. (
        2000012501 ; Serial (Seriennummer)
        28800      ; Refresh (Aktualisierung)
        7200       ; Retry (neuer Versuch)
        604800     ; Expire (ung|ltig nach)
        86400 )    ; min. TTL (mindeste G|ltigkeit)

                IN  NS    ns.bildungswerk-clp.de.
                IN  A     127.0.0.1
##############

/var/named/0.0.128.in-addr.arpa.zone
##############
$TTL 1d

0.0.127.in-addr.arpa. IN SOA ns.bildungswerk-clp.de.
admin.bildungswerk-clp.de. (
        2000012501 ; Serial (Seriennummer)
        28800      ; Refresh (Aktualisierung)
        7200       ; Retry (neuer Versuch)
        604800     ; Expire (ung|ltig nach)
        86400 )    ; min. TTL (Mindestg|ltigkeit)

                IN  NS    ns.bildungswerk-clp.de.
1               IN  PTR   localhost.
################


Hope for help....

Greetings...

Rainer Budde, Germany