MacBook, OS 10.5.6 Driver: CUPS+Gutenprint v5.2.3 Using Photodisc printer test page (JPEG) Test page looks good when printed from Win XP under VM Fusion Test Page was dark and grainy when printed from OS 10 using Preview - Driver was Gutenprint v5.1.3 - Color Profile is "Automatic", which selects "sRGB IEC61966-2.1" I updated the driver, per MisterMe's suggestion. This removed much of the graininess, but the colors are still not bright. Grayscale bar is darker and has dots all the way to the very end, where it should be white. I would appreciate any suggestions about how to continue to improve the color under Mac OS. Thank you.