centos 5.1 不能安装 XFCE4

cybertingred

[root@localhost cybertingred]# yum install xfce4
Loading "installonlyn" plugin
Loading "fastestmirror" plugin
Setting up Install Process
Setting up repositories
Loading mirror speeds from cached hostfile
Reading repository metadata in from local files
Parsing package install arguments
Nothing to do

repo 文件
[base]

name=CentOS-5.1 - Base

baseurl=http://mirror.be10.com/centos/5.1/os/$basearch/
http://mirror.tini4u.net/centos/5.1/os/$basearch/

http://centos.ustc.edu.cn/centos/5.1/os/$basearch/

http://ftp.daum.net/centos/5.1/os/$basearch/

http://mirror.secuidc.com/centos/5.1/os/$basearch/

http://centos.ermly.com/centos/5.1/os/$basearch/

http://ftp.hostrino.com/pub/centos/5.1/os/$basearch/

gpgcheck=1

gpgkey=http://mirror.be10.com/centos/5.1/os/i386/RPM-GPG-KEY-CentOS-5

#released updates

[updates]

name=CentOS-5.1 - Updates

baseurl=http://mirror.be10.com/centos/5.1/os/$basearch/
http://mirror.tini4u.net/centos/5.1/os/$basearch/

http://centos.ustc.edu.cn/centos/5.1/os/$basearch/

http://ftp.daum.net/centos/5.1/os/$basearch/

http://mirror.secuidc.com/centos/5.1/os/$basearch/

http://centos.ermly.com/centos/5.1/updates/$basearch/

http://ftp.hostrino.com/pub/centos/5.1/os/$basearch/

gpgcheck=1

gpgkey=http://mirror.be10.com/centos/5.1/os/i386/RPM-GPG-KEY-CentOS-5

#packages used/produced in the build but not released

[addons]

name=CentOS-5.1 - Addons

baseurl=http://mirror.be10.com/centos/5.1/os/$basearch/
http://mirror.tini4u.net/centos/5.1/os/$basearch/

http://centos.ustc.edu.cn/centos/5.1/os/$basearch/

http://ftp.daum.net/centos/5.1/os/$basearch/

http://mirror.secuidc.com/centos/5.1/os/$basearch/

http://centos.ermly.com/centos/5.1/addons/$basearch/

http://ftp.hostrino.com/pub/centos/5.1/os/$basearch/

gpgcheck=1

gpgkey=http://mirror.be10.com/centos/5.1/os/i386/RPM-GPG-KEY-CentOS-5

#additional packages that may be useful

[extras]

name=CentOS-5.1 - Extras

baseurl=http://mirror.be10.com/centos/5.1/os/$basearch/
http://mirror.tini4u.net/centos/5.1/os/$basearch/

http://centos.ustc.edu.cn/centos/5.1/os/$basearch/

http://ftp.daum.net/centos/5.1/os/$basearch/

http://mirror.secuidc.com/centos/5.1/os/$basearch/

http://centos.ermly.com/centos/5.1/extras/$basearch/

http://ftp.hostrino.com/pub/centos/5.1/os/$basearch/

gpgcheck=1

gpgkey=http://mirror.be10.com/centos/5.1/os/i386/RPM-GPG-KEY-CentOS-5

#additional packages that extend functionality of existing packages

[centosplus]

name=CentOS-5.1 – Plus

baseurl=http://mirror.be10.com/centos/5.1/os/$basearch/
http://mirror.tini4u.net/centos/5.1/os/$basearch/

http://centos.ustc.edu.cn/centos/5.1/os/$basearch/

http://ftp.daum.net/centos/5.1/os/$basearch/

http://mirror.secuidc.com/centos/5.1/os/$basearch/

http://centos.ermly.com/centos/5.1/centosplus/$basearch/

http://ftp.hostrino.com/pub/centos/5.1/os/$basearch/

gpgcheck=1

enabled=0

gpgkey=http://mirror.be10.com/centos/5.1/os/i386/RPM-GPG-KEY-CentOS-5

#contrib - packages by Centos Users

[contrib]

name=CentOS-5.1 - Contrib

baseurl=http://mirror.be10.com/centos/5.1/os/$basearch/
http://mirror.tini4u.net/centos/5.1/os/$basearch/

http://centos.ustc.edu.cn/centos/5.1/os/$basearch/

http://ftp.daum.net/centos/5.1/os/$basearch/

http://mirror.secuidc.com/centos/5.1/os/$basearch/

http://centos.ermly.com/centos/5.1/contrib/$basearch/

http://ftp.hostrino.com/pub/centos/5.1/os/$basearch/

gpgcheck=1

enabled=0

gpgkey=http://mirror.be10.com/centos/5.1/os/i386/RPM-GPG-KEY-CentOS-5

望高手解决一下 感激不尽