Okay, I figured it out. I set "DesktopDoubleBuffer" to no and it worked, so that indicated something wrong with OpenGL. I had removed the xorg OpenGL packages, but not reinstalled the nVidia package. You really do need to reinstall the nVidia drivers any time xorg updates the OpenGL drivers as some nVidia files are obviously overwritten. So if you run into the same problem, try reinstalling the video drivers.