Dunno...
...if this is of any significance, but I was noseying round on my sisters computer the other day (Win 10 upgraded laptop job) and the Wi-fi had been connected for over 20 days, despite her shutting it down completely on separate occasions. I don't recall this happening on Win 7 (the previous OS). I think Win 10 doesn't power down properly. Torvalds might just save computing (as reported elsewhere on El Reg)!