CentOS: yum hangs on "Loading mirror speeds from cached hostfile"

> sudo yum install cpan
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
...

Disable this behavior with:

> vi /etc/yum/pluginconf.d/fastestmirror.conf

enable=0

Which Yum package provides this missing library?

yum whatprovides */libXext.so.6

yum

YUM : Configuration du gestionnaire de paquets