Angry with my flatmates. This morning when I got up, there was no one else home, yet the front door was unlocked. This evening when I came home from work, they both gone to bed, yet the front door was unlocked. When things like this happens, HOW am I supposed to trust them to be responsible when I go away for a holiday? Will need to give them both a serious talk, and let them know that if a break in occurs due to them not locking the door, THEY will be the ones paying for whatever gets stolen (maybe THAT will make them behave a little bit more responsibly...)