Unable to connect Xend with virt-manager

Hi guys.

I have installed debian 6.0.1a. I have install all XEN stuff. including xen kernel, libvirtd, ...
but when i want to connect xend virt-manager shows me this:

Verify that:
 - A Xen host kernel was booted
 - The Xen service has been started

details:

Unable to open connection to hypervisor URI 'xen:///':
unable to connect to '/var/run/libvirt/libvirt-sock', libvirtd may need to be started: Permission denied
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/connection.py", line 971, in _try_open
    None], flags)
  File "/usr/lib/python2.6/dist-packages/libvirt.py", line 111, in openAuth
    if ret is None:raise libvirtError('virConnectOpenAuth() failed')
libvirtError: unable to connect to '/var/run/libvirt/libvirt-sock', libvirtd may need to be started: Permission denied

here is uname output:

Linux debian 2.6.32-5-xen-amd64 #1 SMP Tue Mar 8 00:01:30 UTC 2011 x86_64 GNU/Linux

and also xend and libvirtd is runnig.