See issue 14643 for details: -- 1.- Assigned cups printer to terminal mac address. 2.- UserA connects to thinlinc. File printers.conf is updated accordingly: AllowUser UserA is added. I can see all printers on the server, though. I have access to the one assigned to the terminal only. 3.- Closed the session. printers.conf is not updated. 4.- Reopen the session from the same terminal (same mac address), login with UserB. Printers.conf is not updated. I cannot print. --