I was previously using amd64 when I had this problem, but am now using i386 and don't. Also, according to kde bug #125263, this is likely an amd64 problem. Is anyone else still having this problem and are you running amd64?
** Bug watch added: KDE Bug Tracking System #125263 http://bugs.kde.org/show_bug.cgi?id=125263 -- kinfocenter does not show eth0 interface https://launchpad.net/bugs/31261 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs