[nmglug] virt-manager KVM error message !!!

[a]

Following the step-by-step for creating new virtual machine I get this
message:

:Unable to complete install '<class 'libvirt.libvirtError'> unable to
connect to '/var/run/libvirt/libvirt-sock': Permission denied
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/create.py", line 714, in
do_install
    guest.conn = libvirt.open(self.connection.get_uri())
  File "/usr/lib/python2.6/dist-packages/libvirt.py", line 159, in open
    if ret is None:raise libvirtError('virConnectOpen() failed')
libvirtError: unable to connect to '/var/run/libvirt/libvirt-sock':
Permission denied


Anyone able to translate the above to human readable
form?                                             

                                                    Antonio