Connection to \\localhost\netlogon failed - NT_STATUS_LOGON_FAILURE
 

I am new to Linux and am running Fedora 15.
I am testing out Samba 4 and get the following error
when I try smbclient //localhost/netlogon -Uadministrator
GENSEC backend 'gssapi_spnego' registered
GENSEC backend 'gssapi_krb5' registered
GENSEC backend 'gssapi_krb5_sasl' registered
GENSEC backend 'spnego' registered
GENSEC backend 'schannel' registered
GENSEC backend 'ntlmssp' registered
GENSEC backend 'krb5' registered
GENSEC backend 'fake_gssapi_krb5' registered
Client started (version 4.0.0alpha17).
Got challenge flags:
Got NTLMSSP neg_flags=0x60898215
NTLMSSP: Set final flags:
Got NTLMSSP neg_flags=0x60088215
Connection to \\localhost\netlogon failed - NT_STATUS_LOGON_FAILURE
I am following the instructions out of http://wiki.samba.org/index.php/Samba4/HOWTO
Version is Version 4.0.0alpha17
I get the following when I execute smbclient -L localhost -U%
GENSEC backend 'gssapi_spnego' registered
GENSEC backend 'gssapi_krb5' registered
GENSEC backend 'gssapi_krb5_sasl' registered
GENSEC backend 'spnego' registered
GENSEC backend 'schannel' registered
GENSEC backend 'ntlmssp' registered
GENSEC backend 'krb5' registered
GENSEC backend 'fake_gssapi_krb5' registered
Client started (version 4.0.0alpha17).
Using binding ncacn_np:localhost
Got challenge flags:
Got NTLMSSP neg_flags=0x60898215
NTLMSSP: Set final flags:
Got NTLMSSP neg_flags=0x60008215

Sharename Type Comment
--------- ---- -------
netlogon Disk Network Logon Service
IPC$ IPC IPC Service (Samba Server Version 3.5.11-71.fc15)
REWRITE: list servers not implemented

any help would be appreciated
Thanks.