This is absolutely baffling to me. I have an ibook G4 that runs OS 10.4. My printer is a HP PSC 1610 all-in-one. When I try to print a Black & White document (in B/W mode) from a screenwriting program that runs in OS 9, it comes out GREEN! I even tried taking out the color cartridge, but then nothing prints at all. My black cartridge is new, and prints fine from an OS X program like Word. It was also prints green from my scanning program. Does anyone know why this is? I've heard it might be a color managment issue with the drivers.