I run Ubuntu at work and Fedora at home; i also ran Fedora at my previous job. Ubuntu has been very far from a "trusty rock" (eg two weeks ago it wouldn't boot to X because it had somehow installed two conflicting versions of the Nvidia drivers, and was running the kernel module from one and the userspace client from another, wat), whereas Fedora really has been hassle-free, despite generally having fresher versions of packages.

Given that Fedora is so good, and given that it has an impeccable pedigree and is not exactly obscure, why do i never hear about people using it?