Created attachment 319610 [details] Kdm screenshot Booting up . Logging out or running kde there is a part on the right side of the screen that doesn't seem to be updating correctly. As you can see from the screenshot. After logging out kde, kdm shows part of the last desktop on the right side.
Created attachment 319611 [details] Xorg.0.log
I logged in using Gnome to see what it's like and it's not as bad as under kde but on the right side of the screen the window decoration doesn't display properly so it's an issue under Gnome too.
*** This bug has been marked as a duplicate of bug 464853 ***