[Samba] Rejoin Domain

[Norman Zhang]

I've samba 3.0.2 joined to a NT 4.0 domain as a domain member server.

# net rpc join -U -UAdministrator%password

Windows clients access it using winbind. If I upgrade all NT 4.0 servers 
to W2K3 AD,

# net ads join -U Administrator%password

do I need to rejoin the samba servers to AD? Will winbind continue to 
work? I think W2K3 by default uses kerberos. Will all uid.gid mapping be 
lost?

Regards,
Norman Zhang