Hello, I am running Samba 3.0 as PDC. When changing group ownership via Linux command line of any file, those changes are not reflected by Samba, until smbd is restarted. I have find, that probably group_mapping.tdb is a place where you have cached those permissions mapping to Linux. This file is refreshed only when smbd is started. But I need to control user rights via Linux commands and need to have these rights accepted when users are accessing via Samba share. Unfortunatelly I cannot restart Samba each time I change permissions of some file, because this causes MS Access application crash, when have opened files from Samba shares. Is there any regular way how to tell smbd, that permissions was changed? I try signals, but was unsuccessful. Maybe I am wrong in my smb.conf...? Thank you for your response. Best regards, Tomas Polak -- Tato sprava bola prehladana na vyskyt virusov a nebezpecneho obsahu antivirovym systemom na serveri spolocnosti Jaga Group s.r.o. a zda sa byt cista. Info: postmaster@jaga.sk