We are not due the NBN for at least a year, but the alst month our internet has been patchy to connect and when it i, its so slow, we cannot stream Netflix. I can't even get the PSN store to load (thankfully I don't play any online games).

Been in contact with the ISP, they claim there is nothing at their end... very doubtful of that, as there is nothing wrong with the cabling and there have been no other changes.

It's a bit conspiracy theory, but I think because we are on an unlimited data TPG plan (the idea of having unlimited makes me laugh, at our speeds, we are severely limited!) we may be getting throttled when we are online in peak times and I think they don't care about our connection because we are on an "old" plan.