Working for me
I have this working on two systems. One is Fedora 11 x86_64 on a quad Intel CPU system with a NVIDA card. I installed the NVIDIA drivers from NVIDIA. Then I edited the /etc/X11/xorg.conf file to load the module and use the options in the Screen section, and set the vnc password as root with vncpasswd. It seems to be working fine for me. The second machine is a VM running the 32-bit version of Fedora 11. After installing the vmware tools there was no /etc/X11/xorg.conf file, so I basically copied what was on my other machine, other than the Device section specifying the nvidia driver, and it is working there also. Perhaps there was a fix between the last post on this thread and now...