[Samba] Strange problems with my shares

[Julien Deloubes]

Hello guys,
I have plenty of problems with my shares.
First my env: Samba 4.2.1 on ubuntu 14.04, 2 DC and 1 Domain member (for
the share),Bind 9.9 DLZ for the DNS and winbindd.

When i follow the wiki page about settings home directory (
https://wiki.samba.org/index.php/User_home_drives) the file system
permissions are very strange:
In the security Tab:
-The proprietary user account appears twice (with one entry with
permissions in grey)
-The first user account i had created in the AD appears with full access!
-The admin account appears but is disabled
-I had a root account (Unix User\ root)
-I had a root group account ((Unix group\ root)

Do you have any clues why i have the user account in double, and most
important how can another user account have full access to this home
directory?

Another strange thing: when i set the home folder path in ADUC i had a
message telling:

The \\server\share_homedir folder already exist. Do you want this user to
be granted full control of this folder?

I erase and recreate the homedir according to the wiki and still have issue.
I'm very surpised nobody else had this issue.

Thanks