I'm having a miserable time with my new X1 Nano. It's got some sort of proximity sensor such that if it doesn't see me in front of it for 1 minute (maybe even less) it locks the laptop and goes to a black screen. This means that if I go across the room to grab a book or down the hall (20 feet) to get some more ice or anything I have to unlock this stupid thing again and again (perhaps a dozen or more times each day). All the normal settings (like in Power options and screen saver and such) are set to 10 minutes. This is entirely something new. I need to find a way to disable this or at least crank it up to a 5 minute time out. One minute or less is absurd.