join to AD with windbind question

[ESGLinux]

Hi All,

I have follewed this article, http://kbase.redhat.com/faq/docs/DOC-4855 to
join my server to an active directory

At the end of the article it tells this:
net ads join -U Administrator%password -S samba.foo.com

but when I run this command I get this error:
Administrador's password:
[2010/02/09 13:49:11, 0] utils/net_ads.c:ads_startup_int(286)
  ads_connect: No logon servers
Failed to join domain: No logon servers

If I run the command this way:
net  join -U Administrador
Password:
Joined domain MIDOMAIN.



which is the diference?

If I run the command wbinfo -u I get the  users in the domain and I can
logon with them on the machine. One problem is that If I run kinit user I
always get this error:

 kinit user
Password for user at MIDOMAIN:
kinit(v5): KDC reply did not match expectations while getting initial
credentials

any idea

thanks

ESG