Hello, After migration from 1.0 to 1.1 all machines registered to Spacewalk server aren't able to be updated using "yum update" command. I got : Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=5&arch=x86_64&repo=addons error was [Errno 4] IOError: <urlopen error (-2, 'Name or service not known')> Any idea? Frédéric