步骤如下：
首先是先安装yum-fastestmirror插件，选择自动选择最快的源
#yum install yum-fastestmirror -y
其次：
在/etc/yum.repos.d下，新建文件sjtuedu.repo内容如下：
[sjtuedu]
name=Fedora $releasever - $basearch-Updates
baseurl=ftp://ftp.sjtu.edu.cn/freshrpms/ayo/fedora/linux/$releasever/i386/tupdates/
ftp://ftp.bupt.edu.cn/pub/mirror/fedora/linux/updates/$releasever/$basearch/
ftp://ftp.bupt.edu.cn/pub/mirror/fedora/linux/updates/$releasever/SRPMS/
#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-$releasever&arch=$basearch&country=us
ftp://ftp3.tsinghua.edu.cn/mirror/livna/fedora/updates/$releasever/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora file:///etc/pki/rpm-gpg/RPM-GPG-KEY file:///etc/pki/rpm-gpg/RPM-LIVNA-GPG-KEY
这个RPM-LIVNA-GPG-KEY文件放在/etc/pki/rpm-gpg/下，内容可自己到
ftp://ftp3.tsinghua.edu.cn/mirror/livna就可下载
而RPM-GPG-KEY文件放在/etc/pki/rpm-gpg/下，内容在ftp://ftp.sjtu.edu.cn/freshrpms就可找到，但是会覆盖原来的，不过没有关系。
而北邮电的好像不用KEY的。
至此一切OK。
再尝试在终端输入如下命令，
yum install fuse
就发现很快了。
有的时候提示说什么新建的文件有问题，要用http，ftp等的url，仔细检查一下自己的文件，一般是没有问题的
修改fedora自带的更新源：
然后修改这2个文件。
# gedit fedora.repo
弹出文本编辑器后，把所有内容删除。替换成下列内容。根据你自己的网速也可以精简解个最快的源。
内容如下：
[fedora]
name=Fedora $releasever - $basearch
failovermethod=priority
#baseurl=http://download.fedora.red
baseurl=
http://download.fedora.redhat.com/pub/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://mirrors.usc.edu/pub/linux ... ora/linux/releases/$releasever/Everything/$basearch/os/
http://mirrors.cat.pdx.edu/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://ftp.iij.ad.jp/pub/linux/fedora/releases/$releasever/Everything/$basearch/os/
ftp://ftp.iij.ad.jp/pub/linux/fedora/releases/$releasever/Everything/$basearch/os/
http://mirror.aarnet.edu.au/pub/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://mirror.internode.on.net/pub/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://gulus.usherbrooke.ca/pub/distro/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://mirror.karneval.cz/pub/linux/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://sunsite.mff.cuni.cz/MIRRO ... com/linux/releases/$releasever/Everything/$basearch/os/
http://ftp-stud.hs-esslingen.de/pub/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://fedora.tu-chemnitz.de/pub/linux/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://mirror.fraunhofer.de/down ... ora/linux/releases/$releasever/Everything/$basearch/os/
http://ftp.uni-bayreuth.de/linux/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://ftp.funet.fi/pub/mirrors/ ... ora/linux/releases/$releasever/Everything/$basearch/os/
ftp://ftp.free.fr/mirrors/fedora ... ora/linux/releases/$releasever/Everything/$basearch/os/
http://limestone.uoregon.edu/ftp/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://fedora.mirror.iweb.ca/releases/$releasever/Everything/$basearch/os/
ftp://ftp.cse.buffalo.edu/pub/Linux/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://mirror.cc.vt.edu/pub/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://mirrors.tummy.com/pub/fed ... ora/linux/releases/$releasever/Everything/$basearch/os/
http://mirrors.kernel.org/fedora/releases/$releasever/Everything/$basearch/os/
http://www.gtlib.gatech.edu/pub/fedora.redhat/linux/releases/$releasever/Everything/$basearch/os/
http://ftp.linux.ncsu.edu/pub/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://ftp.iij.ad.jp/pub/linux/fedora/releases/$releasever/Everything/$basearch/os/
ftp://ftp.iij.ad.jp/pub/linux/fedora/releases/$releasever/Everything/$basearch/os/
http://ftp.yz.yamagata-u.ac.jp/pub/linux/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://ftp.rhnet.is/pub/fedora/linux/releases/$releasever/Everything/$basearch/os/
http://mirror.pacific.net.au/linux/fedora/linux/releases/$releasever/Everything/$basearch/os/
#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-$releasever&arch=$basearch
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora file:///etc/pki/rpm-gpg/RPM-GPG-KEY
然后修改 fedora-updates.repo这个文件
# gedit fedora-updates.repo
弹出编辑器后，将内容替换为如下内容：
[updates]
name=Fedora $releasever - $basearch - Updates
failovermethod=priority
baseurl=
http://download.fedora.redhat.com/pub/fedora/linux/updates/$releasever/$basearch/
http://mirrors.usc.edu/pub/linux ... dora/linux/updates/$releasever/$basearch/
http://mirrors.cat.pdx.edu/fedora/linux/updates/$releasever/$basearch/
http://ftp.iij.ad.jp/pub/linux/fedora/updates/$releasever/$basearch/
ftp://ftp.iij.ad.jp/pub/linux/fedora/updates/$releasever/$basearch/
http://mirror.aarnet.edu.au/pub/fedora/linux/updates/$releasever/$basearch/
http://mirror.internode.on.net/pub/fedora/linux/updates/$releasever/$basearch/
http://gulus.usherbrooke.ca/pub/distro/fedora/linux/updates/$releasever/$basearch/
http://mirror.karneval.cz/pub/linux/fedora/linux/updates/$releasever/$basearch/
http://sunsite.mff.cuni.cz/MIRRO ... .com/linux/updates/$releasever/$basearch/
http://ftp-stud.hs-esslingen.de/pub/fedora/linux/updates/$releasever/$basearch/
http://fedora.tu-chemnitz.de/pub/linux/fedora/linux/updates/$releasever/$basearch/
http://mirror.fraunhofer.de/down ... dora/linux/updates/$releasever/$basearch/
http://ftp.uni-bayreuth.de/linux/fedora/linux/updates/$releasever/$basearch/
http://ftp.funet.fi/pub/mirrors/ ... dora/linux/updates/$releasever/$basearch/
ftp://ftp.free.fr/mirrors/fedora.redhat.com/fedora/linux/updates/$releasever/$basearch/
http://limestone.uoregon.edu/ftp/fedora/linux/updates/$releasever/$basearch/
http://fedora.mirror.iweb.ca/updates/$releasever/$basearch/
ftp://ftp.cse.buffalo.edu/pub/Linux/fedora/linux/updates/$releasever/$basearch/
http://mirror.cc.vt.edu/pub/fedora/linux/updates/$releasever/$basearch/
http://mirrors.tummy.com/pub/fed ... dora/linux/updates/$releasever/$basearch/
http://mirrors.kernel.org/fedora/updates/$releasever/$basearch/
http://www.gtlib.gatech.edu/pub/fedora.redhat/linux/updates/$releasever/$basearch/
http://ftp.linux.ncsu.edu/pub/fedora/linux/updates/$releasever/$basearch/
http://ftp.iij.ad.jp/pub/linux/fedora/updates/$releasever/$basearch/
ftp://ftp.iij.ad.jp/pub/linux/fedora/updates/$releasever/$basearch/
http://ftp.yz.yamagata-u.ac.jp/pub/linux/fedora/linux/updates/$releasever/$basearch/
http://ftp.rhnet.is/pub/fedora/linux/updates/$releasever/$basearch/
http://mirror.pacific.net.au/linux/fedora/linux/updates/$releasever/$basearch/
#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=updates-released-f$releasever&arch=$basearch
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora
此时YUM就基本上OK了。最好添加一个LIVNA的源。更新速度一直不错。
可以手动创建livna.repo也可以直接下载RPM包进行安装。
在此我使用了RPM包。原因是方便。
登录地址：
rpm.livna.org
直接选择FC8就可以了。
这是文件会自动下载到你的用户文件甲的下载目录里。如果不需要了可以删除它。