For me, a plain startx will start X (and KDE) without failure, although trying to run kdm will still fail. Other applications that you then start will also work. That's a relief.
Morgon -- "Luckily the Evas can run on gasoline... sad to say, they still get better mileage than most American cars." -- Gendo Ikari, parody of episode 11, Neon Genesis Evangelion.