This is still an issue in Ubuntu 11.04 (I've had my version upgraded doing the regular dist-upgrade via the GUI). I've tried adding a Samsung CLP 510 printer as a network printer (ipp) using the CUPS web interface.
phil@birdy-desktop:~$ id uid=1000(phil) gid=1000(phil) Gruppen=1000(phil),4(adm),20(dialout),24(cdrom),46(plugdev),111(lpadmin),119(admin),122(sambashare) .... and File /usr/share/cups/model/samsung/cms/CLP-510cms does not exist. If you need any further information, please let me know. ** Changed in: system-config-printer (Ubuntu) Status: Expired => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/263802 Title: system-config-printer needs admin privleges To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/system-config-printer/+bug/263802/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs