I have my WiFi turned on (not tethering or hotspot or any of that, just the vanilla WiFi turned on) at my office. If I turn it off, I get a bunch of "so-and-so:so-and-so:disconnected" messages - I recognize them as machine names around the office. What gives? Is my phone autoconnecting somehow to shared drives on my network, or are these machines connecting to my phone automatically as if it's announcing it's available?