Open Stack

hi all

I set up an openstack scenario on a physical computer. The computer runs
ubuntu 12.10 on a kvm hypervior. And then I emulate a virtualized
controller node and two virtualized  compute nodes
with  qemu-system-x86_64/kvm.

Everything seems ok, but after some time, I ssh a vm on the compute node,
or I open a vnc client, something crashes and a lot of core dump appears on
my physical computer's screen.

I can not capture them as text, so I take some photos, anyone knows what
happend?