Common sense tells you...

Common sense tells me that leaving your windows open in your house when you have equipment like a lcd monitor is not a smart thing to do. Unfortunately a friend of mine recently had to deal with a theft because someone else left a window open and then left for the day. It's unfortunate that there are people that would rather steal than honestly come buy something but it is a reality. It's why even when I am home at night I make sure all of the downstairs windows are shut no matter the weather, even with two dogs, it's not worth the risk.