Deki

Bug after upgrading from Ubuntu 8.10 to 9.04

$ Unhandled Exception: System.Net.Sockets.SocketException: Address already in use
  at System.Net.Sockets.Socket.Bind (System.Net.EndPoint local_end) [0x00000] 
  at System.Net.EndPointListener..ctor (System.Net.IPAddress addr, Int32 port, Boolean secure) [0x00000] 
  at System.Net.EndPointManager.GetEPListener (System.Net.IPAddress addr, Int32 port, System.Net.HttpListener listener, Boolean secure) [0x00000] 
  at System.Net.EndPointManager.AddPrefixInternal (System.String p, System.Net.HttpListener listener) [0x00000] 
  at System.Net.EndPointManager.AddListener (System.Net.HttpListener listener) [0x00000]