Hi, all : 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 . Could someone help me ? Thanks in advance ~ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20091113/51b55abb/attachment-0004.html>