I just used the Kubuntu upgrade tool to get the latest goodies from Hardy (wobbly windows here I come). However, this resulted in a strange looking system. I've found three symptoms:
#1 Klipper and friends start in windows in the top left corner before finding their way down to the kicker dock.
#2 Selecting "logout" or pressing ctrl-alt-backspace results in a blank screen, a hard reset is required to get back to business.
#3 Window decorations are messed up. For instance, Firefox gets some old-style KDE 2-ish look and RMB clicking on the title bar results in what looks like an unthemed menu. However, the desktop menu looks alright.
Desktop menu Window menu If anyone knows of a good way to resolve these issues, do let me know.