[Samba] folder permissions

["Info"]

Running Samba 3.0.25a on AIX 5.3, Configured in W2003 AD as Member Server

Have set up share called Test.

>From Windows :-
Can add, remove folders and files.
Can change permissions on Files from Windows "security" tab.

Problem :

Cannot change permissions on Folders from Windows "security" tab

my security settings are thus :-

security mask = 0777

force security mode = 0

directory security mask = 0777

force directory security mode = 0

Any solutions ?
selwyn