I finally found a solution in the Ubuntu forums (http://ubuntuforums.org/showthread.php?t=199147).
I had to change the group in '/etc/inetd.conf' to 'scanner': sane-port stream tcp nowait saned.scanner /usr/local/sbin/saned saned Now the scanner gets detected on the remote host, both as super and normal user. Thanks for your help, Allan!
