smbclient againt Windows 7/2008 auth fails with invalid parameter

[Shirish Pargaonkar]

Is there something missing in the setup on the Windows 7/2008 machines
I have.  No such problems with a Windows 2003 server.
LmCompatibility level is 3.

# cat /usr/local/samba/lib/smb.conf | egrep "ntlmv2|spnego"
       client use spnego = no
       client ntlmv2 auth = yes

# /usr/local/samba/bin/smbclient  -V
Version 3.6.0-GIT-UNKNOWN-devel

cifstest4:~ # /usr/local/samba/bin/smbclient  //9.3.123.456/winshare1
/mnt/smb_c -U Administrator%passwd -s /usr/local/samba/lib/smb.conf
session setup failed: NT_STATUS_INVALID_PARAMETER

The same smbclient works fine with
 client use spnego = yes.
against Windows 7/2008 shares.

How can we tell what invalid parameter?  Could this be due to
missing/incorrect client time in
ntlmv2 response?