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Gathering header information file(s) from server(s)
Server: Red Hat Linux 4ES - i386 - Base
retrygrab() failed for:
  http://mirror.dulug.duke.edu/pub/yum-repository/redhat/4ES/i386/headers/header.info
  Executing failover method
failover: out of servers to try
Error getting file http://mirror.dulug.duke.edu/pub/yum-repository/redhat/4ES/i386/headers/header.info
[Errno 4] IOError: HTTP Error 404: Not Found