Since I started evaluating Windows 10, I have notices an excessive amount of bandwidth usage. As I am using a Lenovo y580 laptop for this test I connect via multiple sources. When at home, I am not concerned about the bandwidth usage, but using over 3gb of bandwidth in the background without my permission in one day when it is connected to my portable hotspot that only provides 5gb a month is a bad thing. I should be able to designate certain connections to require my permission to use internet bandwidth. I should still be able to browse the internet and run apps that use the internet on my command but it is not acceptable to use it without my permission in the background. I know I can set it to Airplane mode which I am doing for now, but if I turn it on for just a couple of minutes it uses 150 megabytes. I expect you will suggest I don't use windows 10 right now but I think this is an important issue that should not be ignored. Note that I am also a software developer and I have been doing for Unix/Linux, CP/M, MSDOS, Windows 3.1, Windows 95, Windows 98 (skipping ME), Windows XP, Windows 7, WIndows 8. I would like to help see you through this period of development and come out with a great Windows 10.