Similar issue to this thread. My printer is an HP Deskjet 5740. When I print from an XP laptop using the actual HP drivers, printouts are flipped horizontally, as if held up to a mirror. If I change XP to use generic Adobe postscript drivers, the flipping is fixed, but there is no color. printouts are grayscale it seems.
I'm sharing the printer over http, not samba, fwiw.
If anyone has any tips, I'd really appreciate it.