I'm having trouble printing to a Laserjet 4si after switching to OS 10.2. I've tried several different drivers including HP and Gimp Print, but I can't print to the 4si. I've also tried 2 or 3 different 4si printers. Print Center indicates printingis processing but no action occurs at the printer. No problem printing to other printers such as HP Laserjet 4m+ and laserwriter 16/600. Anyone else having this problem? Any good solutions?