Another issue is that xen isn't officially shipped on any kernels higher than 2.6.16. Feisty is shipping 2.6.20, while I'm sure lots of people can get it to work without issue, its worth noting.
-- no xen-3.0 in feisty https://launchpad.net/bugs/80282 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs