I've seen Johnny mention that cameras broadcasting to rooms full of items takes a lot of resources from the MOO. I realize that unless someone turns their camera monitor off before logging out, it will continue spitting messages at objects that don't really care until the player logs back in.
I suggest that televisions and monitors automatically turn off after a certain amount of time when there are no awake characters in the room to watch the cameras. While it may not fix the problem entirely, it may save some resources wasted on giving information to empty rooms.