Print job getting lost.

We have a computer on our W2K network that will lose a print job every now and then. The job will pop up in the print queue and then go away just like other print jobs but it never makes it to the printer. The computer is NT 4.0, using HP JetDirect, and the printer is an HP 8150 with a JetDirect card. I have tried giving the computer a different network connection so I know it doesn’t have to do with network cables or network connectivity. I would say that 98% of the print jobs make it but every now and then one just doesn’t show up from this particular computer. We have also checked other printers to make sure it is not going to some other jet direct printer.