wget http://alioth.debian.org/frs/download.php/3015/axel-2.4.tar.gz
tar zxvf axel-2.4.tar.gz
cd axel-2.4
./configure
make 
make install

下载 axelget.conf and axelget.py
＃ wget http://cnfreesoft.googlecode.com/svn/trunk/axelget/axelget.conf
＃ wget http://cnfreesoft.googlecode.com/svn/trunk/axelget/axelget.py
axelget.conf 放到/etc/yum/pluginconf.d/
axelget.py 放到/usr/lib/yum-plugins/

最后确保/etc/yum.conf中plugins=1就好了
yum -y update yum 试试看～