Rawhiiiiiiiiide!
No, not the cowboy series, but the Fedora development repository.
As part of my investigation into why large transfers are hard locking my PC, I was advised to install the kernel from Rawhide, which also meant enabling the RPMFusion Rawhide repository to pull in the Nvidia modules. So first we install the repo:
yum install fedora-release-rawhide.noarch
Then we edit the repo files to enable them but limit them to kernel/nvidia RPM’s (we don’t want to upgrade to Fedora 15 Alpha!