Agree Ross - I have a mate getting similar to you about same distance from cabinet, and I used to get about 40/10 in Mt Roskill. I suspect some of the wiring is as old as the house, and I am a bit suspicious of the lead in wire, it doesn't come out of conduit into the junction box, it just comes from the depths of under the house somewhere!!

Will wait and see. took a couple of covers off last night to try have a look at any daisy chaining of jack points, and it's a bit of a butchery! The lady upstairs has kindly let me link in to her connection for a bit while we get sorted so time is not so much an issue now. Hope her data cap can handle a steam update after 4 weeks of inactivity =P