This is for YDL v5.x ONLY! There was a small problem with the /etc/yum.repos.d files provided in the 20061127 ISO, in all three repos files, base was used as the tag at the top of the files. Use the following file contents in each of the files to fix the bug, as well to configure YDL.net as your yum server. Replace USERNAME and PASSWORD with your respective YDL.net enhanced username and password. yellowdog-base.repo: [base] name=Yellow Dog Linux 5.0 Base baseurl=http://USERNAME:PASSWORD@www.ydl.net/downloads/enhanced/yum/5.0/base/ #mirrorlist=http://www.terrasoftsolutions.com/resources/yd50-base-mlist enabled=1 gpgcheck=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY yellowdog-extras.repo: [extras] name=Yellow Dog Linux 5.0 Extras baseurl=http://USERNAME:PASSWORD@www.ydl.net/downloads/enhanced/yum/5.0/extras/ #mirrorlist=http://www.terrasoftsolutions.com/resources/yd50-extras-mlist enabled=1 gpgcheck=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY yellowdog-updates.repo: [updates] name=Yellow Dog Linux 5.0 Updates baseurl=http://USERNAME:PASSWORD@www.ydl.net/downloads/enhanced/yum/5.0/updates/ #mirrorlist=http://www.terrasoftsolutions.com/resources/yd50-updates-mlist enabled=1 gpgcheck=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY