samba - Jul 2010 - Can't mount samba drive or join domain with W2K3 server

Hi??I have some questions about the same questions for [Can't mount samba
drive or join domain with W2K3 server]

On my computer my samba version is 3.0.4

And    kinit administrator at domain  can pass.

But when I input:
Net rpc join ?CS domain name ?CU administrator

There is wrong message :
Rpc_client/cli_netlogon.c:cli_nt_setup_creds(249) cli_net_setup_creds: request
challenge failed

When I enter the password,ther is wrong message:

Utils/net_rpc_join.c:net_rpc_join_newstyle(326) error domain join verification
(reused connection): NT_STATUS_INVALID_COMPUTER_NAME


I don??t know what can I do now ??..
There is no more message about this wrong situation..

Please help .

Thanks very much.

Looking forward to hearing from you soon.

Best regards!

Enki