[et-mgmt-tools] Strange behaviour of virt-manager ... bug ?

[Steph]

Hello,

Using virt-manager 0.5.3 under Ubuntu Hardy Heron 8.04, I'm facing a
strange behaviour.

when using virt-manager as root user, everything's fine.
when using virt-manager as non root user, everything's getting
complex... I get this error :
-------snip
Error starting domain: virDomainCreate() failed
_
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/engine.py", line 480, in
run_domain
    vm.startup()
  File "/usr/share/virt-manager/virtManager/domain.py", line 379, in startup
    self.vm.create()
  File "/usr/lib/python2.5/site-packages/libvirt.py", line 240, in create
    if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: virDomainCreate() failed
-------/snip

But, with non root user,  when using "virsh start myvm", the vm starts
correctly.

Afterwards :
 * as non root : virt-manager does not display the VM running
 * as root : the vm is displayed to be running

vncviewer localhost confirm that the VM is correctly running.

Is it a bug, or something else ?

Thanks for your help !

Steph