This is the latest release of Red Hat Enterprise Linux. Advantages and features of the new 5.4 version of this popular open source operating system: Advancing virtualization (kvm), cloud and operating platform leadership.
Read more at: http://arstechnica.com/open-source/news/2009/09/red-hat-moves-forward-with-kvm-virtualization-in-rhel-54.ars http://press.redhat.com/2009/09/02/innovation-without-disruption-red-hat-enterprise-linux-5-4-now-available/
