h0bble, you are right that no one in their right mind would leave their PC with unsaved work over lunch. However, it is not unknown for me to get dragged out of my office for 5 mins by my boss or a visitor in reception and in that situation I may not actually remember to save. People leave their computers and short of a powercut you expect to find it as you left it. Perhaps with some dialogues looking for your attention but certainly not rebooted!