I experience the identical crash on a HP DL360 G2 (2x PIII 1.4Ghz, 3GB). The binary kernel 2.6.16 from xen source works without problems.
-- Dom0 crashes upon start of second DomU https://launchpad.net/bugs/71348 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs