This is a very important feature as most cable/ DSL ISP's have (in fine print) in their contract that we are not allowed to have a server running. I already got busted for this once before and I had to promise not to use any apps that allow access to my computer. I argued with them that practically all the internet apps could be considered a server of one type or another. But by not allowing us to turn OFF sharing...while being good for the "network sharing experience" It puts us all at risk of being disconnected