https://www.redhat.com/archives/fedora-devel-list/2006-July/msg00955.html That topic on Fedora-Devel list reminds the 4KSTACK saga that was not supported by Nvidia for 4 months in Fedora Core 2 time. What is also interesting was the Xorg 7.1 breakage with current Nvidia drivers are done by a Nvidia developer. Complaining that a third party package won't work on a system like Fedora Core 5 because of Xorg 7.1 is not a good way to solve the problem. After, users relying on closed binary driver can choose to not update.