Version: (using KDE 4.3.0) OS: Linux Installed from: SuSE RPMs My KDE 4.3.0 is working with 5-10% CPU power (idle or text writing). XORG is between 1-3%. After starting Kontact nothing changes. When I close Kontact XORG is eating between 15 and 20% CPU power and is slowing down the whole system. Closing Kontact or even killing doesn't matter. XORG isn't recovering until logout/login etc. Please let me know if you need additional information. I'll try to provide it.
I have no problems anymore with KDE SC 4.4.