Hi All, I know this is not the right forum to ask my question as I am not a scientific-linux user. I have fedora 10 installed on my laptop. But since my problem appears to be a general problem independent of the platform so I am daring to ask that problem. (I may be wrong, sorry in advance if it so) when I am trying to run yum update I am getting the following error: Loaded plugins: aliases, allowdowngrade, changelog, downloadonly, fastestmirror, fedorakmod, kernel-module, list-data, merge-conf, presto, priorities, : protect-packages, protectbase, refresh-packagekit, refresh-updatesd, security, tmprepo, tsflags, upgrade-helper Determining fastest mirrors * updates: download.fedoraproject.org Could not retrieve mirrorlist http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-10&arch=i386 error was [Errno 4] IOError: <urlopen error nonnumeric port: 'port'> Error: Cannot find a valid baseurl for repo: fedora I tried to for the solution in the internet but could find the solution. Thanks in advance for any kind of help. With Regards Suneel