Ist in deinem Rechner eine NVidia-Grafikkarte eingebaut? Siehe http://www.kde.org/announcements/4.1/: "Known issues * Users of NVidia cards with the binary driver provided by NVidia might suffer from performance problems in window switching and resizing. We've made the NVidia engineers aware of those problems. However, no fixed NVidia driver has been released yet. You can find information on how to improve graphics performance on Techbase, although we ultimately have to rely on NVidia to fix their driver." Siehe auch http://www.heise.de/newsticker/ Kernel-Log-Neue-Nvidia-Treiber-lahmen-weiter-Linux-2-6-26-1-in-Kuerze-- /meldung/113651
Siehe
http://www.kde.org/announcements/4.1/:
"Known issues
* Users of NVidia cards with the binary driver provided by NVidia might suffer from performance problems in window switching and resizing. We've made the NVidia engineers aware of those problems. However, no fixed NVidia driver has been released yet. You can find information on how to improve graphics performance on Techbase, although we ultimately have to rely on NVidia to fix their driver."
Siehe auch
http://www.heise.de/newsticker/
Kernel-Log-Neue-Nvidia-Treiber-lahmen-weiter-Linux-2-6-26-1-in-Kuerze--
/meldung/113651