Hello
Last weekend, I hace accepted the installation of the KDE 4.2.2 on my Kubuntu.
After providing the mySQL password and having answered that I wanted to continue to work hence the installation process will be completed after a restart.
Therefore I restarted my computer a little bit later and since that time I am directly going to a linux prompt !! the KDE graphical interface is not loaded. And it's impossible to start an Xwindow with startx (error messsage)

I read on a french forum that someone had the same issue, solved it by installing xfce, changing source and key, using dpkg and dist-upgrade !!! but no detail procedure and as I'm not a linux expert I ask for a support !

Is it possible whether to unistall 4.2.2 or update the system in order to make it work.

thanks in advance for any answer