Comment 40 for bug 346513

Since my machine (Kubuntu 9.10) IS broken by something like this, I am posting to this bug, though it could be a different one, messages are much the same.

Machine suddenly wouldn't accept login (kdm), messed about, got into command line using Ctrl-Alt-F1, logged in, then told upstart to stop kdm, used sudo startx to start up a root session, checked Auth.log and found surfeit of these error messages which seem to be broadcast (for Introspection?) by Plasma desktop, but which appear to start prior to my command-line login, and thus make me suspect they're connected with the blocking of the KDM login. Will attach logs if you're at all interested.

Though I may have done something to precipitate this, I have no idea what it might have been, and am a bit floundering trying to deal with dbus and friends.