can you do a iostat -a ? what ver of sysstat do you have installed ? rpm -qa | grep sysstat on my rh3 box its sysstat-5.0.5-5.rhel3 on fedora 4 its sysstat-5.0.5-9.fc that might be your problem.. to old of a version -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list