This seems to help http://magazine.redhat.com/2007/11/20/tips-and-tricks-why-does-xorgs-cpu-usage-shoot-up-when-using-nvidias-driver/
This seems to help http:// magazine. redhat. com/2007/ 11/20/tips- and-tricks- why-does- xorgs-cpu- usage-shoot- up-when- using-nvidias- driver/