Originally Posted by shivaa
Yes, it's indeed 5.9. You will need to upgrade it manualy, it will not be upgraded automatically.
That is incorrect. CentOS will
automatically upgrade to the latest point release unless you have edited the files in /etc/yum.repos.d to lock it to a specific point release. The .repo files that come with the installation just request the updates for version "5", and on the servers, "5" is just a symlink to the latest point release.
If you did want to stay locked at a particular point release, you would have to edit the .repo file and change all instances of "$releasever" to "5.7", or whatever point release you wanted. Doing so is inadvisable because you would get no further security updates once a later point release came out. If you wanted to run on a particular point release, you would be better off using Scientific Linux, which does
continue to offer security updates for older point releases (and does not, by default, automatically update to newer point releases).