OMG, we all have the same f'ing job. I take the mouse and I only take the chair if the chair at the station right next to the computer is occupied, if not, I take that chair.
I am doing 45 hours a week of this crapola, and the lab I work in has 36 computers and usually there's only 1 or 2 people in here at a time, at the most, I have to lend a hand to someone 2 or 3 times day, otherwise, its all surfing the web or reading a novel.