不管你是那个linux 发行版本，请到这里更新yum源，也有apt

yum源

http://dag.wieers.com/rpm/FAQ.php#A2
#  General Information

   1. What is the Dag RPM Repository ?
   2. What distributions and architectures are supported ?
   3. Why should I use RPMforge repositories ?
   4. How can we thank ?

# Installation and Configuration

   1. How to use this repository ?
   2. How to configure to use RPMforge ?
   3. How do I use Apt ?
   4. How do I use Yum ?
   5. How do I use up2date ?