op de cups pagina van dapper staat de volgende boodschap:
Administrative commands are disabled in the web interface for security reasons. Please use the GNOME CUPS manager (System > Administration > Printing). /usr/share/doc/cupsys/README.Debian.gz describes the details and how to reenable it again.
en daar staat dan :
- Administration over the web interface is disabled by default since it
requires the CUPS daemon to be able to read /etc/shadow. If you want to
enable web administration with shadow passwords (authentication type
'basic'), put the user cupsys into group shadow by
adduser cupsys shadow
as root.
Only users who are in group 'lpadmin' can administrate printers (using
gnome-cups-manager, lpadmin or any other frontend but the web
interface). To allow printer administration to user joe, put him into
this group by executing
adduser joe lpadmin
(again as root).