Why do KDE4 apps looks so ugly? What's with the enormous expanses of grey? I've been a great fan of KDE since the early days of KDE2, but it seems to get buggier, less unix-y, and now it's really ugly too! I'll stick with the 3.5.9 as long as I can, but I think my next upgrade will be to XFCE.
Also, anyone who releases a new version of an app without including the majority of the key features of older versions deserves to be slapped with a wet fish. I like Amarok, but a higher priority ought to be making it run long-term without crashing...
In my view, a "desktop environment" should be a collection of self-contained apps, sharing a toolkit and a design view, but not "welded" together, i.e. respecting the Unix philosophy of small simple tools. What don't get is the need to have so many KDE-specific "frameworks". Eg sound should be handled by alsa or (maybe) by pulseaudio, but not by yet another daemon.