[Fedora-xen] Cannot boot HVM guests on FC6 Test1

[Zhao, Yunfeng]

I could not boot HVM guest on FC6 Test1 IA32.
After executed xm create,no qemu window popup. And xm list shows the
guest blocked.
I submitted a bug for this issue:
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=197350

On FC6 Test1 IA32e:
I cannot boot FC6 Test1 IA32e in runlevel 5. and in runlevel 3 I cannot
start xend.

Thanks
Yunfeng