FreeNAS-9.1.1-RELEASE-x86 (a752d35). Successfully setup a CIFS share and access it from a Windows machine. From a Windows machine I can set the security ACL with no issues. Also from the Windows machine I can set the share permissions with no issues; I remove the Everyone group and add a different active directory group. When the FreeNAS box is rebooted, the security ACL remains as it was configured, but the share permissions are reset to just the Everyone group, the other groups are gone.