After spending the last 2 days trying to get my OS X 10.2.6 to boot up om my G4 800 FP iMac using Disk First Aid (which kept reporting it had fixed the problems but they were still there upon a re-verify), I went out and bought DW 3.0 today. It took a couple of hours but I am writing this review on my iMac so needless to say, WHAT A GREAT PRODUCT!