I get caught in the trap on a regular basis. About once a week, usually around 4 AM, every cash register in the entire store shuts down. I was told it's for computer updating, and things like that. Notice the big red null on the screen and my basket of stuff, with a soda bottle on the right.
This is simply bad business practice. Can't they switch to a back up server? Can't they do it in two batches? Do they really need every cash register in the store to go off line? People are waiting to give you money, and you can't take it!
