Created attachment 17418 [details]
Video of the corruption
I'm on a NVidia 7600GS with 256 mb, driver 173.14.09 (but this happened on the same card with all the older versions of the driver I tried past times), when I use KDE 4 (latest beta 2 and older versions) when the OpenOffice (or other major Gtk application like Firefox) is openened, I got graphics corruption on the Plasma component, as you can see in the attached video.
As a reference look at:
And most at:
Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.