If you don't have a master splitter installed, that would be the first thing I would get done. If your using an xDSL technology, getting a master splitter with a new line run to a new jackpoint is something you absolutely should do.
i had kinda hope speakman had died, what a pity
I had a problem for 2 years when it rained, it wet my line enough to lose signal, and again when it dried up.So showery days were the worst, middle of summer / winter was the best.Unfortunatly all the line tech guys blamed my house wiring, even after i tried new filters and a new modem twice.I wish you nothing but luck, you will need it.... How i fixed mine... i got fibre installed.