At the site
http://www.fedorafaq.org/#flash, as "3. Q: How do I enable 3D support for my nVidia graphics card in Fedora?'", I ran the following command:
yum install --disablerepo=freshrpms kmod-nvidia
After that, I could no longer run Yumex, yum, and others. Sorry I don't have those errors to put in here, but I am not at home, and the fresh install wrote over it anyway. Synaptic still worked, but would not reinstall yum or yumex with a bunch of errors regarding various python.so files. I also could not uninstall yumex, etc, nor then do a fresh install. All the python.so files listed in the error window were not on my harddrive after running the above command.
Since I had just put FC9 x86_64 on my machine, it was easier to do a complete new install.
But I was wondering if anyone understands how the yum --install..., command could have wreaked such havoc. My machine has a dual core Athlon chip, and an Nvidia 5700 video card, in case that makes any difference.
Mark