Hi

Im getting this problem on yum and its driving me nuts on centos 5

[root@main /]# yum update
Loading "installonlyn" plugin
Setting up Update Process
Setting up repositories
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=5&am...386&repo=os error was
[Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')>
Error: Cannot find a valid baseurl for repo: base


Could any one please help me

Thanks in advance