Hello, RHEL 5.7 has just been released, so here are some interesting Xen related bugfixes and enhancements in el5.7: Overview of Xen update in 5.7: http://rhn.redhat.com/errata/RHBA-2011-1070.html Technical notes about Xen changes in 5.7: https://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.7_Technical_Notes/xen.html Also kernel has a lot of fixes and updates: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.7_Technical_Notes/kernel.html Cheers, -- Pasi