Yum has been working quite fine lately on installing new sofware and updates but out of the blue after a complete upgrade thru synaptic yum begun producing the following output: [root@localhost mirco]# yum update Setting up Update Process Setting up repositories jpackage-generic-free 100% |=========================| 951 B 00:00 kde-redhat 100% |=========================| 951 B 00:00 dries 100% |=========================| 951 B 00:00 atrpms 100% |=========================| 951 B 00:00 jpackage-distspecific-fre 100% |=========================| 951 B 00:00 kde-redhat-all 100% |=========================| 951 B 00:00 Cannot find a valid baseurl for repo: [[['release', 'updates-testing' Error: Cannot find a valid baseurl for repo: [[['release', 'updates-testing' I am not aware of the existence of the repo [[['release , @'updates testing' How did it get inserted into my yum.conf? The upgrade thru synaptic did not update any yum.conf file or likes. What has happened? Any help or idea?