The fourth update in the CentOS Linux 5 family is released. Highlights of the new release include a kernel-based virtual machine virtualization, alongside of Xen virtualization technology. The scalability of the virtualization solution has been incremented to support 192 CPUs and 1GB hugepages, GCC 4.4 and a new malloc(), clustered, high-availability filesystem etc. Grab a CD set from a mirror, and via BitTorrent 32bit, 64bit DVD. On a related note, if you are already running CentOS-5.3 or an older CentOS-5 distro, simply upgrade it over the Internet.