The "auto" entry in /etc/network/interfaces is deleted when disabling the "enable at startup" voice in Knetworkconf .
Verified on Edgy and Feisty -- knetworkmanager fails to find network devices https://launchpad.net/bugs/77557 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs