I have samba Ver. 3.6.1 integrated in Windows active directory 2008R2. One share configured with 3 users: user1 with read/write permissions, user2 with read permissions and user3 also with read permissions but this user belongs also to domain admins group. If i use acl_xattr module, user3 can't change files, but is able to delete the same files with only read permissions, user1 and user2 behave correctly. Without acl_xattr module, user3 can't delete files with only read permissions, but the file disappears, clicking F5 appears again. user1 and user2 behave correctly. Thanks JDM