yum update
 

Some body help because am stuck. when I run the yum update command on the CentOS 5.0 server it gives the following error message;

# could not retrieve mirrorlist [I]http://mirrorlist.CentOS.org/?releas...h=i386&repo=os

error was[Errno 4] IOError:<urlopen error( -3,'Temporary failure in name resolution')>

What can I do?

you can check your networkconnection especially the dns setup.

e.g. can you lookup the dns name of the server:

What does /etc/resolv.conf contain? It should contain valid nameservers, than will do the lookup of the internet namespace, or at least a local dns-server that resolves it either as forward or with recursion