Problemas na configuração do YUM

Alquém pode me ajudar a esclarecer o seguinte erro:


$yum check-update
Warning, could not load sqlite, falling back to pickle
Setting up repositories
http://apt.sw.be/dries/redhat/el4/en...ta/repomd.xml: [Errno 12] Timeout: <urlopen error timed out>
Trying other mirror.
Cannot open/read repomd.xml file for repository: dries
failure: repodata/repomd.xml from dries: [Errno 256] No more mirrors to try.
Error: failure: repodata/repomd.xml from dries: [Errno 256] No more mirrors to try.


Desde de já, agradeço.

Leonardo Carlotti