My wife had her MTB stolen from in front of the house while we were watching a football game (10 AM - 1 PM) recently. It was locked on a Thule rack with a Kryptonite lock incorporated into the rack. They just cut the cable and grabbed it. Until then we had always just left our MTB's locked on the rack without a problem. Seems like the crooks are more desperate now. The story had a happy ending since our friends sold her a much better replacement very reasonably (They wanted to just give it to her, but we wouldn't let them).