Ubuntu 7 Server: NFS Server Problem

[Konstantin Pavlovsky]

hello!
I ve got a problem . i tried to install nfs server. on my ubuntu 7 server.
So i installed nfs-kernel-server.
But the service didnt start.
in /var/log/messages i found this:

Apr 25 17:36:44 rudev2 kernel: [188805.142763] Installing knfsd 
(copyright (C) 1996 okir at monad.swb.de).
Apr 25 17:37:19 rudev2 kernel: [188840.333764] portmap: server localhost 
not responding, timed out
Apr 25 17:37:19 rudev2 kernel: [188840.333818] RPC: failed to contact 
portmap (errno -5).
Apr 25 17:37:54 rudev2 kernel: [188875.329792] portmap: server localhost 
not responding, timed out
Apr 25 17:37:54 rudev2 kernel: [188875.329856] RPC: failed to contact 
portmap (errno -5).
Apr 25 17:38:29 rudev2 kernel: [188910.326145] portmap: server localhost 
not responding, timed out
Apr 25 17:38:29 rudev2 kernel: [188910.326205] RPC: failed to contact 
portmap (errno -5).
Apr 25 17:39:26 rudev2 kernel: [188966.930256] portmap: server localhost 
not responding, timed out
Apr 25 17:39:26 rudev2 kernel: [188966.930320] RPC: failed to contact 
portmap (errno -5).

Restarting portmap didnt change the situation.
Plz tell me whatta hell is going on and how can i fix the problem?
thanx a lot!

-- 
Best regards
Pavlovsky Konstantin
skype: sir_makkintosh
icq: 375428