Sorry, guess I didn't pay enough attention to the error - my reflexive reaction wasto downgrade and reattempt the installation. As for not installing mesa-dri-drivers-experimental, I guess I can live with it, especially since neither compiz nor mutter want to run at the moment. Typical early Rawhide behavior for me. Most intriguing aspect of the installation, however, is the initramfs situation. With the initramfs-2.6.34-11.fc14.x86_64.img created during the installation, when X starts, all I see is a white screen with scattered colored pixels on it; the system locks up and I have to use the power-on switch to reboot. However, the system boots fine if I remove the initrd line from grub.conf