[Samba] Samba 3.4.7 with LDAP authentication

[Miguel Medalha]

> objectClass: inetOrgPerson
> objectClass: posixAccount
> objectClass: hostObject
> objectClass: top

Your user entries do not contain Samba attributes. They MUST include the 
following:

objectClass: sambaSamAccount

Are you sure that you enabled the samba.schema in /etc/openldap/slapd.conf?

include        /etc/openldap/schema/samba3.schema

(In some systems it will be "samba.schema" instead of "samba3.schema")

How did you create your users in the LDAP database? Did you use 
smbldap-tools?

It seems to me that you would benefit greatly by reading this:

http://www.samba.org/samba/docs/man/Samba-Guide/happy.html