can anyone explain how UFS ACLs work actually

[Wojciech Puchar]

>>
>> added some entries and default entries for one directory. added say user john with rwx permissions
>
> You need NFSv4 ACLs for Windows, not the POSIX ones.  (And, generally speaking, 49% of Samba code for dealing with permissions is unused and obsolete, while another 49% is useless and harmful; the trick is to configure the latter to do as little as possible.)
what i possibly done by disabling

nt acl support = no

Now samba just respect ACLs i've set from unix shell. And nothing more. 
Exactly what i wanted