On Tue, 04 Mar 2008 23:37:31 -0800 Nathan Grennan <fedora-list@xxxxxxxxxxxxx> wrote: > Why is the command below all that is needed to bring the system to > it's knees? I see a lot of variation in this kind of thing. Copying a big backup file to my external usb hard driver made my system stutter a bit (though nothing like what you describe), but I have recently dd'ed up some disk images for xen, and the system worked perfectly well during that operation. This was on fedora 8 x86_64 with sata disks.