I installed Mandriva 2009 with the new KDE 4.1 desktop by default and was impressed with the over all feel. Compared to older versions of Mandriva, Mandriva 2009 seemed quicker and snappier and gave me a clean feel while browsing. I enjoyed the theme, background and panel tones much more in this latest release of Mandriva. Not to mention Mandriva 2009 pulled of using KDE 4.1 as its default desktop. I actually had very few problems compared to other bleeding edge KDE installs.