I have a user with a network attached Deskjet 6940 set as his default printer. When he tries to send any PDF files to the printer they go to the print que on the machine and you can see that the data is sent, but the printer does nothing. No other print jobs can go through. If I set the printer to print immediately then it will pull a sheet of paper from the tray to the print head but then not do anything else until I power off the printer and turn it back on. 3 other people also seem to be having this problem on the same printer. I reinstalled the drivers for the printer, and made sure they were all using the latest Adobe reader software. It can print any other document with out any problems. I tried hooking it up locally with a USB cable and it still does the same thing. Is this a software issue or do I need to replace this printer? Thanks.