http://kde.org/announcements/4.0/

I’ve been following the development of KDE 4 since the beginning, and there’s never really been a point where it wowed me.  I used KDE on my Linux computer and I think it’s great.  But maybe it’s just after using OS X for so long, I just got used to a lot of polish in the interface.  I’m not sure a novice could sit down in front of KDE 4.0 and perform basic tasks without help.