You probably have [updates-released] & [base] specified in /etc/yum.conf - hence its a duplicate (the other occurances are in /etc/yum.repo.d/fedora.repo & fedora-updates.repo)
To fix - remove the duplicate entries from /etc/yum.conf
Both /etc/yum.repo.d/fedora.repo and etc/yum.repo.d/fedora-updates.repo exist but are empty in my sys.
Contained in /etc/yum.conf - in the parts mentioned in the errors I have:
Repository updates-released already added, not adding again
[updates-released] name=Fedora Core $releasever - $basearch - Released Updates baseurl=http://ftp.ens.utulsa.edu/pub/linux/fedora/core/updates/$releasever/$basearch http://rpmfind.net/linux/fedora/core/updates/$releasever/$basearch
http://mirror.clarkson.edu/pub/distributions/fedora/linux/core/updates/$releasever/$basearch
http://mirrors.usc.edu/pub/linux/fedora/fedora/fedora/$releasever/$basearch/RPMS.updates # http://fedora.redhat.com/updates/released/fedora-core-$releasever #gpgcheck=1
Repository base already added, not adding again
[base] name=Fedora Core $releasever - $basearch - Base baseurl=http://mirror.hiwaay.net/redhat/fedora/linux/core/$releasever/$basearch/os http://rpmfind.net/linux/fedora/core/$releasever/$basearch/os
http://mirror.clarkson.edu/pub/distributions/fedora/linux/core/$releasever/$basearch/os
http://mirrors.usc.edu/pub/linux/fedora/fedora/fedora/$releasever/$basearch/RPMS.os # http://fedora.redhat.com/releases/fedora-core-$releasever #gpgcheck=1
Setting up Repo: livna-stable
Cannot open/read repomd.xml file for repository: livna-stable
failure: repodata/repomd.xml from livna-stable: [Errno 256] No more > mirrors to try
[livna-stable] name=Livna.org - Fedora Compatible Packages (stable) baseurl=http://rpm.livna.org/fedora/$releasever/$basearch/yum/stable http://livna.cat.pdx.edu/fedora/$releasever/$basearch/yum/stable #gpgcheck=1
[livna-unstable] name=Livna.org - Fedora Compatible Packages (unstable) baseurl=http://rpm.livna.org/fedora/$releasever/$basearch/yum/unstable http://livna.cat.pdx.edu/fedora/$releasever/$basearch/yum/unstable #gpgcheck=1
[livna-testing] name=Livna.org - Fedora Compatible Packages (testing) baseurl=http://rpm.livna.org/fedora/$releasever/$basearch/yum/testing http://livna.cat.pdx.edu/fedora/$releasever/$basearch/yum/testing #gpgcheck=1
So I'm at a loss as to where the problem could be.
-- Your life, for better or worse, is an exemplary act. Linux user #372812