On Thu, 2004-04-22 at 10:03 +0800, Bill Fung wrote: > I am running yum-2.0.3-5.rh.fr on redhat 8.0. Everytime I run "yum > check-update", I got the error message "Existing lock /var/run/yum.pid: > another copy is running. Aborting." . Actually, I got the same error > message on ALL yum command except the help command "yum -h". are you doing anything odd with /proc and/or /var/run? run this: rpm -V yum just to check out the package. -sv