Proxmox Virtual Environment is an easy to use Open Source virtualization platform for running Virtual Appliances and Virtual Machines. Proxmox VE is an 
open source project, developed and maintained by Proxmox Server Solutions GmbH.
Few days ago, a new version of proxmox was released. The new release includes the long awaited new stable OpenVZ
2.6.32 and also latest KVM 0.15 with KSM support. PVE kernel 2.6.32, updates for drivers including e1000e to 1.5.1, ARECA RAID driver, megaraid_sas, bnx2, igb to 3.1.16, ixgbe to 3.5.14-NAPI, drbd 8.3.10; vzctl (3.0.28), update to latest upstream, set default template to Debian 6.0, merge some fixes from upstream; PVE manager (1.9), fix uptime display for 2.6.32 kernel with 1000HZ, support newer vzctl versions, support ‘maxfiles’ backup option; PVE QEMU KVM (0.15.0), use PXE ROMs from upstream qemu-kvm; QEMU Server (1.1), small fixes for new qemu-kvm 0.15.
