@Brian,
Well shoot, I can't think what would have caused that. There may be useful info in /var/log/upstart/libvirt-bin.log or /var/log/libvirt/libvirtd.log.
@Brian,
Well shoot, I can't think what would have caused that. There may be upstart/ libvirt- bin.log or libvirt/ libvirtd. log.
useful info in /var/log/
/var/log/