Once in a while I will find 2 sheets printed on the printer, one sheet just has the message "HEAD / HTTP\1.0" and the other has 3 lines "GET / HTTP/1.1", "Host: 172.20.41.60", and "Connection: close". The printer is an HP LaserJet 4100dtn and is networked. I don't know if this is a printer problem or a network problem. Other than that it seems to be working fine.