我用yum安装软件总是提示连接不到镜象是怎么回事？我的系统是刚装的f11
提示错误如下：

[root@Hunter etc]# yum -y install mplayer
载入插件: refresh-packagekit
Everything-ftp.sjtu.edu.cn                               | 3.8 kB     00:00     
Everything-ftp.sjtu.edu.cn/primary_db                    | 8.4 MB     00:52     
Fedora-ftp.sjtu.edu.cn                                   | 3.4 kB     00:00     
Fedora-ftp.sjtu.edu.cn/primary_db                        | 1.7 MB     00:09     
adobe-linux-i386                                         |  951 B     00:00     
adobe-linux-i386/primary                                 |  11 kB     00:01     
adobe-linux-i386                                                          17/17
fedora                                                   | 3.8 kB     00:00     
fedora/primary_db                                        | 8.4 MB     00:14     
http://rpm.livna.org/fedora/11/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
尝试其他镜像.
http://livna.cat.pdx.edu/fedora/11/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
尝试其他镜像.
http://wftp.tu-chemnitz.de/pub/linux/livna/fedora/11/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
尝试其他镜像.
http://ftp-stud.fht-esslingen.de/pub/Mirrors/rpm.livna.org/fedora/11/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
尝试其他镜像.
http://mirror.atrpms.net/livna/fedora/11/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
尝试其他镜像.
ftp://mirrors.tummy.com/pub/rpm.livna.org/fedora/11/i386/repodata/repomd.xml: [Errno 4] IOError: 
尝试其他镜像.
错误: Cannot retrieve repository metadata (repomd.xml) for repository: livna. Please verify its path and try again

应该不会吧，我昨天安装 vsftpd 都成功了

# yum install vsftpd 

实在不行的话

#yum clean all

#yum install xxxx