root        : ERROR    'NoneType' object has no attribute 'enabled'
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/keystone/utils.py", line 62, in check_error
    return func(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/keystone/controllers/tenant.py", line 24, in get_tenants
    marker, limit, url)
  File "/usr/lib/python2.6/dist-packages/keystone/logic/service.py", line 165, in get_tenants
    (_token, user) = self.__validate_admin_token(admin_token)
  File "/usr/lib/python2.6/dist-packages/keystone/logic/service.py", line 500, in __validate_admin_token
    (token, user) = self.__validate_token(token_id)
  File "/usr/lib/python2.6/dist-packages/keystone/logic/service.py", line 484, in __validate_token
    if not user.enabled:
AttributeError: 'NoneType' object has no attribute 'enabled'
eventlet.wsgi.server: DEBUG    172.16.40.4 - - [25/Oct/2011 10:07:18] "GET /v2.0/tenants HTTP/1.1" 500 266 0.029999