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ERROR 2012-04-15 20:11:24,674 maas.maasserver ################################ Exception:  ################################

ERROR 2012-04-15 20:11:24,675 maas.maasserver Traceback (most recent call last):

  File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111, in get_response

    response = callback(request, *callback_args, **callback_kwargs)

  File "/usr/lib/python2.7/dist-packages/django/views/decorators/vary.py", line 22, in inner_func

    response = func(*args, **kwargs)

  File "/usr/lib/python2.7/dist-packages/piston/resource.py", line 166, in __call__

    result = self.error_handler(e, request, meth, em_format)

  File "/usr/lib/python2.7/dist-packages/piston/resource.py", line 164, in __call__

    result = meth(request, *args, **kwargs)

  File "/usr/lib/python2.7/dist-packages/maasserver/api.py", line 250, in dispatcher

    self, request, request.method, *args, **kwargs)

  File "/usr/lib/python2.7/dist-packages/maasserver/api.py", line 192, in perform_api_operation

    return method(handler, request, *args, **kwargs)

  File "/usr/lib/python2.7/dist-packages/maasserver/api.py", line 577, in acquire

    node.acquire(token)

  File "/usr/lib/python2.7/dist-packages/maasserver/models.py", line 667, in acquire

    assert self.owner is None

AssertionError