I just installed Fedora 19.  I am running the latest kernel and the 319 nvidia driver.  Oddly enough, 2 copies of plasma-desktop seem to start, and I have to go in a kill the second copy, otherwise I simply have a blank screen.  I've looked around to try to figure out what is causing the second copy of plasma-desktop to start, but I'm not really sure where to look.  Any ideas on where to start?

George