also depending on just HOW the repo files are set up
6.3 ,6 , or
Code:
http://???/?/?/$releasever/$basearch/os/
you ether need to just run update
or
instal the centos6.5 release repo rpm
"centos-release-6-5.el6.centos.11.1.x86_64.rpm"
or
use the --releaserver=6.5 line in yum