[Samba] Domain Admin cannot access files

[steve]

Hi
I just joined a Samba 3.6.3 machine as a file server for a Samba4 domain.

Normal users can login and reach the shares apart from the domain 
Administrator.

After Administrator has logged in, any attempt to reach the file server 
results in a username and password prompt. Supplying the correct 
information still will not allow share access for Administrator.

Using s3fs under Samba4, Administrator is allowed full access without 
being asked for a password.

What am I missing?

Cheers,
Steve

[global]
         workgroup = MARINA
         realm = hh3.site
  	security = ADS
	
[home]
         path = /home2/MARINA
         read only = No

[staff]
         path = /home2/staff
         read only = No