I’m running an exit node,
          yreka and have noticed as single IP address that has been
          connected for at least a day, probably longer, which is
          pushing anywhere from 3Mb to 9Mb but receives very little
          traffic back from my node, sub 500Kb.  My traffic to this
          machine is going out of 443 (my ORPort) and being sent to port
          50090 on the other machine.  I only allow exit traffic to
          ports 80 and 443.  So I do not think this is exit traffic.   I
          have also checked on blutmagie and could not find the IP as a
          relay which would suggest that this is a TOR user and I am
          serving as an entry node.  I have never seen such speeds for a
          single user.    
        The one sided
          nature of the traffic and its size have my interests peaked. 
          I just wanted to verify that this is not unusual and something
          that I should investigating.  I did not include the IP address
          of the machine because I was not sure it would be in the
          spirit of TOR to post such information.  Any feedback would be
          greatly appreciated.