can anyone explain how UFS ACLs work actually

[Wojciech Puchar]

i turned UFS ACL on one filesystem.

added some entries and default entries for one directory. added say 
user john with rwx permissions

When i access this directory from user john logged in FreeBSD - everything 
works as expected.

I have samba server running - with windows to unix user mapping.

Everything works as expected EXCEPT with directory i set ACL entry. 
windows cannot access it.

i don't have ACL support enabled in samba because i don't want to be 
viewable/settable from windows.

I assumed samba - just as every other unix program - would just obey this 
settings, but seems it does not.

what i do wrong?