title Ubuntu 7.10, kernel 2.6.22-14-generic
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-14-generic root=UUID=ae1c320c-c2d8-4c0c-9419-df62a163b40a ro quiet splash nohz=off
initrd /boot/initrd.img-2.6.22-14-generic
quiet
The change didn't have any effects on my computer. My virtualbox is still using almost half of my cpu capacity..

Do you have any other ideas ?