From: Majian <jiannma at gmail.com> >When I run "yum update" command in my laptop , it displayed this : >root at foo Desktop]# yum update >Loaded plugins: aliases, changelog, fastestmirror, filter-data, keys, kmod, list-data, priorities, protect- >> : packages, protectbase, security, tmprepo, verify >Loading mirror speeds from cached hostfile > * addons: mirrors.163.com > * base: mirrors.163.com >> * extras: mirrors.163.com > * rpmforge: ftp-stud.fht-esslingen.de > * updates: mirrors.163.com >>Skipping filters plugin, no data >0 packages excluded due to repository protections >Skipping security plugin, no data >Setting up Update Process >No Packages marked for Update >I searched on the Internet some time , but had not any useful answer . Since you did not use a filtering option, the plugin is "ignored"... One example from the man page gives: "Limiting package lists to filtered ones" JD