The Department of Driver Services center in Cumming was so quiet Tuesday afternoon you could hear the pages of a book being turned.Normally a beehive of activity, just two people sat among dozens of vacant seats at the center, off Pilgrim Mill Road near Ga. 400.“We don’t even know what exactly has happened … but the entire statewide system is down,” said Ron Shankle, district manager. “It’s been down all day.”The computer outage impacted every licensing and testing center in the state Tuesday, which is typically their busiest day, since offices are closed Mondays. By Wednesday morning, the system was back up and running.Susan Sports, department spokeswoman, said the issue appeared to be vendor related.