I have a Panasonic KXp2123 Dot matrix printer connected to my network via a HP-Jetdirect print server. I can send some print jobs to the printer; however, only one or two print jobs will print and my que still has print jobs waiting to print. Sometimes I can restart the printer daemon and sometimes printing will start. I have RedHat 6.1 installed and I configured my printer with the printtool utility. I can ping the print server consistently. I have another printer( made by Kyocera) that I can print to consistenly. It has its own built in print server.