In the airline I work for, most off the inadvertent slide deploying is caused by caterers or cleaners opening the door before bringing their truck up to the door. At a previous airline I woked for they were only allowed to open doors from the outside thus disarming the dorr if it was armed (we are obviously taling about a/c like the 747 here) The only people that were allowed to open doors from the inside were the cabin crew in an emergency (obviously), the flight crew, and the ground engineers. At that airline very few slides blown. This airline now, seems to be a regular occurence.