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I'm running KDE 4.8 on Ubuntu 11.10. Two days ago I updated from 4.7 to 4.8 and yesterday there were a lot (75) packages I could update, which I did.

Today I started my PC and I have an extreme lag. Most stuff doesn't even react when clicked and it takes about 20s until I see the text I typed into textareas. sudo top showed me that the CPU usage is very low (2-3%). Restarting the PC or the KDE plasma-desktop did not help either.

What am I supposed to do now? Is there any way to fix this without reinstalling KDE or the complete system?

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closed as too localized by jokerdino, Takkat, Jorge Castro, Ringtail, Thomas W. Sep 25 '12 at 13:51

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