高手看一下怎么回事，关于yum
yum update的时候出现如下错误：fc8系统
Could not retrieve mirrorlist http://mirrors.fedoraproject.org ... ora-8&arch=i386 error was
[Errno 14] HTTP Error 503: Service Temporarily Unavailable
Error: Cannot retrieve repository metadata (repomd.xml) for repository: fedora. Please verify its path and try again
