Installed w/o any problems. Program itself seems very fast. It's certainly no Photoshop, but will serve the computer challenged folks (like my parents) well with it's very simple, although limited feature set. Good organizational tool and free! Had no trouble getting along w/ my 20gig iTunes library. Wish the Enhance feature had a keyboard command and also wish I could apply the enhance to more than one picture at a time. Enhance improved the photos about 90% of the time. iMac G4 flat panel, 800Mhz, 10.2.3, 768 Megs Ram