simple DNS - NXDOMAIN

[philip]

installed Fedora 1, bind-9.2.2.P3-9
hostname is localhost, the default one, changed nothing on the setting,
/etc/init.d/named start
nslookup -sil localhost    or used (127.0.0.1)
    Server : 192.168.1.15
    Address: 192.168.1.15#53

** server can't find localhost : NXDOMAIN

Any ideas ?
thank you.