samba - Jun 2010 - No subject

net rpc join -I 10.10.10.1 -W geodezja -U root
Joined domain GEODEZJA

but when I would like to vampire accounts
net rpc vampire -I 10.10.10.1 -U root

I have receive error:
Fetching DOMAIN database
FAILED to fetch domain database: NT code 0x1c010002


in /var/log/messages on PDC i have receive :

"Jun 25 15:16:33 localhost smbd[8657]: [2010/06/25 15:16:33, 0] 
rpc_server/srv_netlog_nt.c:_net_auth_2(478)
Jun 25 15:16:33 localhost smbd[8657]:   _net_auth2: creds_server_check 
failed. Rejecting auth request from client SERWER2 machine account 
SERWER2$
Jun 25 15:16:33 localhost smbd[8657]: [2010/06/25 15:16:33, 0] 
rpc_server/srv_netlog_nt.c:_net_auth_2(478)
Jun 25 15:16:33 localhost smbd[8657]:   _net_auth2: creds_server_check 
failed. Rejecting auth request from client SERWER2 machine account 
SERWER2$
"

What am I doing wrong ???

PLEASE HELP!!