Version: 4.6 (using KDE 4.6.2)
After updating my ubuntu 10.10 to KDE 4.6.2 yesterday I noticed two problems with shutdown:
a) clicking the read "leave" button (lock/logout widget) didnt have an effect. Lock would work, but no reaction for leave. I then tried KDE menu->leave and clicked shutdown/restart there; again nothing happened.
b) A few reboots later, "leave" did seem to work, as a shutdown/restart seemed to start, but a few seconds later, display would switch to one of the text consoles ... and just stay there forever. In order to continue the shutdown, I have to press the power button of my laptop; than shutdown seems finish fine.
This could be a duplicate of bug 270228.
I can confirm the described behaviour on Kubuntu Maverick after upgrade to KDE 4.6.2
*** This bug has been marked as a duplicate of bug 270228 ***