libvirt users - Sep 2013 - connecting with the libvirt daemon on xen+debian

Hi all:Me being new to libvirt, this may sound very trivial to you.  Any help is
welcome.  I have deb7u1, with xen4.1.4 and libvirt 0.9.12 (since those are the
latest available thru apt utility) .  I have enabled xen-unix-server as well as
xen-http-server in the /etc/xen/xend-config.sxp file.  But I still keep getting
the following message.
>From local:
root@debian:~# virsh -c xen:///error: unable to connect to
'localhost:8000': Connection refusederror: failed to connect to the
hypervisorroot@debian:~#
>From remote:
[root@CentOS-6 libvirt]# virsh -c
xen+ssh://root@10.240.64.112/root@10.240.64.112's password: error: unable to
connect to 'localhost:8000': Connection refusederror: failed to connect
to the hypervisor[root@CentOS-6 libvirt]#