CentOS 5.6 release

Release notes: http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.6

Heads up, 'yum update' should upgrade you, if you are on 5.5. If yum update is not working, do a clean: 'yum clean all' then update.

Had my production servers upgraded from Redhat 5.5 to 5.6 a few days ago, no bugs or issues so far.