I have been using 4.0.x since January, so I have learned to live with some of the quirks such as suddenly disappearing panels. The KDE4.1 beta fixes many of these problems, as well as gives the desktop a tremendous speed boost. Some other improvements I’ve noticed are:
* Smooth scrolling in Dolphin and Konqueror, even on pages/directories containing lots of images.
* Drag and drop icons from the menu to the panel and desktop for shortcut launchers
* Add more than one panel!
* Very good and fast desktop effects with Xrender. Fglrx is currently broken for me, so this is a big issue.
* Ozone lets you have differently colored window borders
* the Display systemsettings module actually seems to work
* Plasma stability (especially nice for a beta)
* very innovative “+” and “-” in dolphin when hovering over icons for selecting multiple files/directories
* When you resize the panel, the various applets are resized as well.
As a side note, I have been using Neon (nightly amarok builds).The default Neon color scheme does match the default plasma color scheme, but it does not match my slightly tweaked scheme. Apachelogger handily came to my rescue and told me to copy the kde4 kdeglobals to the neon config directory. “cp .kde4/share/config/kdeglobals .amarok-nightly/share/config/” will do this for you nicely.
