Don Maxwell wrote: > Does anyone know if hyperthreading can be disabled on FC5-x86_64 ? > This is entering a totally new area for me. You could go through the BIOS (which will disable that functionality in the CPU), or try the nosmp kernel parameter (which will make Linux use only one of the two virtual processors). You'd put that on the GRUB kernel line. Hope this helps, James. -- E-mail address: james | If infinite rednecks fired infinite shotguns at an @westexe.demon.co.uk | infinite number of road signs, they'd eventually | create all the great literary works of the world. | In braille.