I am with IINet, and will bet my left one that it is a backhaul issue. They are simply not buying enough to satisfy the customer needs. I got the 100/40 connected last week and am around 150-200 metres from the node. During the day I get 95/37 until about 6pm, and last night it dropped to 8/25. By around 11pm it was back up again. I complained and they want me to jump through hoops doing all sorts of tests. Plain and simple like Telstra, too many customers and not enough bandwidth.