4RE KLR - We have used may of the HP all-in-one machines and we always leave them on. It is harder on them to turn them on and off then to leave them on. We have some that are 5-6 years old and going strong. The only problem is someone yanking out paper jams and breaking the gears. Use the machines backward/forward button to have the machine eject the jam. Also if the machine is not on no faxes. You can also turn off the auto answer and no recieve faxes. Take care, Jon
