Кушал у меня kded4 100% одного ядра. Сначала грешил на экспериментальные дрова r600, а потом нашёл
http://kubuntuforums.net/forums/index.php?action=printpage;topic=3105506.0
-------репост---- Title: Re: Can't: shut down, restart, switch user, log out, ... Post by: chconnor on August 07, 2009, 09:46:16 pm I love it when there's an easy solution.
For those that are like me and need a little more guidance, here's a more detailed list of what I (and some others) did to solve it:
Launcher menu -> Settings -> System Settings (under General -> Look&Feel ->) Notifications (under System Notifications -> Applications Tab) select Event Source "KDE System Notifications" I selected each of the entries in the table in turn and UNchecked "Play a sound", then clicked Apply Under the Player Settings tab, I selected (it was already selected) "No audio output". I had to restart to see the fix work.
Bless this humble forum, -c
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Т.е. просто отключаем КДЕшный звук! И 100% загрузки проца как не бывало ...
Но баги с прокси это не убирает: