My system is openSUSE 11.4 x86_64, and I installed Nvidia driver.
After I upgraded KDE from 4.6.0 to 4.6.1 from Index of /repositories/KDE:/Release:/46/openSUSE_11.4 repository, I logouted and want to login again, but always stay at login interface.>:(
Then, I login to consle, and run startx, I got some error message, one of which is about setid of /usr/bin/Xorg .
Finally, I downgrade the kde to 4.6.0, then now I can login KDE environment.:shame: