I was just wondering if the ports could be affected by something on the network? It's a long shot because most things on the network are the normal home devices none of which are using these odd protocols but I thought it might be worth asking the question.

Cheers

Nick

111, 135, 137, 138, 139, 445

This looks like a windows PC being exposed to me.

now you have uPnP turned off reboot the router and do the test again.