One of my student has some problem installing ATI driver on her laptop which is running Kubuntu 9.04. She asked me to solve the problem, because she desperately wanted to try the new desktop effect in KDE. She saw my presentation before and since then, she become quite a fanatic Linux users.
So, today, i'm playing with Kubuntu for a while, but i will be back to my Slackware when it's done. I still prefer Slackware for my primary Linux distribution that resides on my systems.