i also try to setup my 2490 mf in Leopard.The printer ist connected via lan, so i chose the HP Jetdirect Socket in Printer setup. I followed all the steps in the Install.osx file. Black/white printing works fine, but color doesn't, when i print a color jpg image.
When i print this file, mentioned above, its colored -> perfect:
nc 192.168.1.13 9100 < testpage-cups-a4-2490-win.p
Forum: Konica Minolta magicolor 2490 MF