>Have you tried upgrading to the latest kernel and Nvidia driver? I upgraded to this kernel and Nvidia driver: (yumex) Installed: kernel-smp-2.6.16-1.2080_FC5.i686 This package includes a SMP version of the Linux kernel. It is required only on machines with two or more CPUs as well as machines with hyperthreading technology. Install the kernel-smp package if your machine uses two or more CPUs. (yumex) Installed: kmod-nvidia-smp-1.0.8178-6.2.6.16_1.2080_FC5.i686 This package provides the nvidia kernel modules built for the Linux kernel 2.6.16-1.2080_FC5smp for the i686 family of processors. and it works. The smp kernel works for amd 3000+ with hyperthreading. I also had to change my /boot/grub/grub.conf file on the boot drive to reflect the new kernel. Now if I can just find that KDE log viewer??? -ron-