A study released Monday by Princeton University found that 20 percent of all Americans are currently waiting for the next available representative. 'At this moment, some 50 million of us are on hold,' study head William Voss told reporters while waiting to talk to a Con Edison operator about an error in his February gas bill. 'I myself have been on hold for 13 minutes now.' Voss assured Americans that their calls would be answered in the order they were received. 