weird "no supported architecture for os type 'hvm'"

[Claude Noshpitz <cnoshpitz@xxxxxxxxxxxxxxxxxx>]

Hi,

I have two identical machines with exactly the same CentOS 5.4 kickstarted
from the same sources, and the same packages installed. Their cpuinfos are
identical, and they are running libvirt 0.6.3 with the very same
libvirtd.conf.

Yet...

One of them works fine, the other says "no supported architecture for os
type 'hvm'" for the same template (attached) and image.

Any thoughts on what kind of defect or misconfiguration could cause this?

Thanks much!

--Claude

Attachment: kvm.xml
Description: kvm.xml