samba - Mar 2006 - samba 3.0.21c, AIX 52 ML7 gcc 3.3.2, Error authenticating root in SWAT

After managing to compile samba successfully, I now try to test SWAT,
before attempting to join a domain.

When I connect a browser to port 901 on the new instance of samba I get the
SWAT login, but when I use correct local credentials for the root user I do
not get authenticated, rather the logon box pops up again , and after 3
attempts get Bad Authorisation.

In swat.log I get:-



[2006/03/29 16:25:19, 0] auth/pampass.c:smb_pam_error_handler(73)
  smb_pam_error_handler: PAM: Init Failed : System error


Any Suggestions?

Regards

Mark



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