I recently installed XP SP2 in a branch office on three PCs. Two of the PCs of the same model (Gateway 500L) are having problems printing to their HP LaserJet 4200n printer. The third (Gateway 500C) is having no problem. The problem the two are experiencing are extreme slowness of printing. I've changed the driver on one of those PCs to an HP 4100 driver and the printing quickens significantly. Is there a problem with SP2 and that model printer driver?