Description of problem:
Choosing System->Administration->Services from gnome menu produces "Starting Services" button on taskbar, which then disappears.  Running from command line produced:
Traceback (most recent call last):
  File "/usr/bin/system-config-services", line 945, in <module>
    GUI (use_dbus = use_dbus).run ()
  File "/usr/bin/system-config-services", line 900, in __init__
    self.serviceherders.append (cls (bus = self._bus))
  File "/usr/lib/python2.5/site-packages/scservices/dbus/proxy/serviceherders.py", line 53, in __init__
    for service_name in self.list_services ():
  File "/usr/lib/python2.5/site-packages/slip/dbus/polkit.py", line 48, in enable_proxy_wrapper
    return func (*p, **k)
  File "/usr/lib/python2.5/site-packages/scservices/dbus/proxy/serviceherders.py", line 66, in list_services
    return self.dbus_object.list_services (dbus_interface = "org.fedoraproject.Config.Services.ServiceHerder")
  File "/usr/lib/python2.5/site-packages/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python2.5/site-packages/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/python2.5/site-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.AccessDenied: A security policy in place prevents this sender from sending this message to this recipient, see message bus configuration file (rejected message had interface "org.freedesktop.PolicyKit" member "IsSystemBusNameAuthorized" error name "(unset)" destination ":1.73")

Version-Release number of selected component (if applicable):
system-config-services-0.99.28-3.fc10.noarch

Additional info:
Tried "setenforce 0" with same result.