I found problem in the log?

I have look in the log file and i have see this problem:
2013-03-08 14:03:35,352 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:13:35,352 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:23:35,355 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:33:35,399 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:43:35,726 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:53:35,352 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
But i can watch Video on my Samsung TV. Which problem is this and how can i solved? I have a Asus RT-N56U Router and use Firmware 3.0.0.4.318.
2013-03-08 14:03:35,352 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:13:35,352 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:23:35,355 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:33:35,399 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:43:35,726 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
2013-03-08 14:53:35,352 WARN [PortMapper] Could not add port mapping to the router: Connection refused: connect
But i can watch Video on my Samsung TV. Which problem is this and how can i solved? I have a Asus RT-N56U Router and use Firmware 3.0.0.4.318.