A word of caution based on my recent experience. I've been using a Canon MF4200 series on my MacBookPro with system 10.6.8 since forever. The Canon Mac URFII driver is required to make this multifunction printer work. And it does, quite nicely. I've always downloaded the updated Apple Canon drivers if for no other reason than to have the latest & greatest. I've never experienced a problem until Apple Canon update 2.10. With this update, I'm able to print once from any appliation like Safari or Word or Preview, then the application becomes non-responsive. Relaunching the application and attempting to print only locks up the application again. I have to restart the Mac, relaunch the application, then print. Once. Otherwise the application will become non-responsive trying to print a second time. I've given this update a low rating because, for me, it's problematic.