Meaningless log spam

2013-03-01 09:50:23+0000 [ProxyClient,client] Unhandled Error
        Traceback (most recent call last):
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/application/app.py", line 323, in runReactorWithLogging
            reactor.run()
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/internet/base.py", line 1173, in run
            self.mainLoop()
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/internet/base.py", line 1185, in mainLoop
            self.doIteration(t)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/internet/epollreactor.py", line 381, in doPoll
            log.callWithLogger(selectable, _drdw, selectable, fd, event)
        --- <exception caught here> ---
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/python/log.py", line 88, in callWithLogger
            return callWithContext({"system": lp}, func, *args, **kw)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/python/log.py", line 73, in callWithContext
            return context.call({ILogContext: newCtx}, func, *args, **kw)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/python/context.py", line 118, in callWithContext
            return self.currentContext().callWithContext(ctx, func, *args, **kw)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/python/context.py", line 81, in callWithContext
            return func(*args,**kw)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/internet/posixbase.py", line 627, in _doReadOrWrite
            self._disconnectSelectable(selectable, why, inRead)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/internet/posixbase.py", line 257, in _disconnectSelectable
            selectable.readConnectionLost(f)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/internet/tcp.py", line 279, in readConnectionLost
            self.connectionLost(reason)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/internet/tcp.py", line 485, in connectionLost
            self._commonConnection.connectionLost(self, reason)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/internet/tcp.py", line 299, in connectionLost
            protocol.connectionLost(reason)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/web/http.py", line 472, in connectionLost
            self.handleResponseEnd()
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/web/proxy.py", line 88, in handleResponseEnd
            self.father.finish()
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/web/server.py", line 231, in finish
            return http.Request.finish(self)
          File "/var/praekelt/python-deviceproxy/local/lib/python2.7/site-packages/twisted/web/http.py", line 885, in finish
            "Request.finish called on a request after its connection was lost; "
        exceptions.RuntimeError: Request.finish called on a request after its connection was lost; use Request.notifyFinish to keep track of this.