Could not start kdeinit. Check your installation

I recently installed Suse 9.1 on my machine, and things were running fine. Two weeks ago I successfully upgraded to KDE 3.3.2. Yesterday night, I did Suse's online update. I wanted to install only latest security patches, but couldn't figure out how to do it. So I updated everything. Apparently I did mess up something, because next time when I started my computer, I got a message on small window on the top left corner "Could not start kdeinit. Check your installation" the screen was light gray. Clicked on OK and it took me command interface. I'm newbie to Linux/SuSe and I don't know where to look. Dipak