Re: NVIDIA driver will not work with latest Fedora 15 Gnome Shell
People on the Fedora mailing list have reported that 3.0.2-4 from testing has solved the problem. I never experienced the issue (looks like another 64 bit problem?). I've been running 3.0.2-4 for a few hours now and I'm not experiencing any issues.
Check the Fedora mailing list for the link to the testing package.