Previously, a /var/run/yum.pid file was left on the disk after running the "yum --downloadonly" command. Consequently, under certain circumstances, the
"yum" command failed because the yum utility incorrectly assumed that another instance of "yum" was already running. With this update, /var/run/yum.pid is correctly removed after running "yum --downloadonly", and the described problem
no longer occurs.