I've just fitted a Geforce 8500GT card and installed the restricted drivers with the Hardware drivers manager.
Im using Kubuntu version.
I get the Nvidia splash screen ok, and in system settings it says I'm using the nvidia driver. But the only option
for refresh rate is 50 Hz. I dual boot with xp, and in there the rate is 70 Hz. When scrolling it does seem a bit slow. How can I change the refresh rate?