Krazy Kubuntu Annoyance
I'm running Kubuntu Gutsy Gibbon (7.10) on one of my main workstations. As with its sibling Ubuntu, it's an endlessly-entertaining blend of really nice stuff and really irritating stuff. The nice stuff is nearly-current releases of fast-moving applications like KDE, Digikam, Krita, KWord, and other apps that I use a lot, easy-on-the-eyes graphics, a good set of default applications, and nicely-organized menus. The irritating stuff is they still don't pay enough attention to delivering reliable basic functionality in core functions like networking and printing. Both often require manual tweakage to get them to work correctly, and even then you may be foiled by a Helpful Daemon.
NetworkManager is the newest addition to my Helpful Daemon hit list. I have two wired Ethernet interfaces on this box. One is configured and active, eth1, and one is not, which is eth0. The correct behavior is for any unconfigured NIC to be ignored by the system. But no. NetworkManager, which is installed by default on Gutsy, thinks it knows better than me how to manage my interfaces. This is what the Release Notes say: