i upgraded to fedora 12 and getting this error while using yum...
please suggest to something..

[root@localhost harit]# yum install vlc
Repository updates is listed more than once in the configuration
http://mirror.dulug.duke.edu/pub/yum-repository/redhat/12/i386/repodata/repomd.xml: [Errno 12] Timeout on http://mirror.dulug.duke.edu/pub/yum...ta/repomd.xml: (28, '')
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again

i also tried for repositories....

[root@localhost harit]# yum repolist
Repository updates is listed more than once in the configuration
http://mirror.dulug.duke.edu/pub/yum...ta/repomd.xml: [Errno 12] Timeout on http://mirror.dulug.duke.edu/pub/yum...ta/repomd.xml: (28, '')
Trying other mirror.
repo id repo name status
Webmin Webmin Distribution Neutral enabled: 35
base Red Hat Linux 12 - i386 - Base enabled: 0
fedora Fedora 12 - i386 enabled: 0
google Google - i386 enabled: 0
rpmfusion-free RPM Fusion for Fedora 12 - Free enabled: 0
rpmfusion-free-updates RPM Fusion for Fedora 12 - Free - Updates enabled: 0
skype Skype Repository enabled: 0
updates Red Hat Linux 12 - Updates enabled: 0
repolist: 35

Look in your repo directory, which is probably /etc/yum.repos.d.
The files whose name ends in .repo contain the info for each
repo. Apparently you have the same repo listed twice in the
same file or once in two files. Either comment out the duplicate
or rename the file that contains the duplicate.