I dont own a PPC card or OS4 and I understand some people feeling when sold a perhaps incomplete OS and being asked to do it again. But I just like to say even Microsoft does it Windows Vista (buggy, slow, badddd!) to Windows 7 (fast, stable, gooddd), plus it not like every three years you have to upgrade OS, plus this might very well be the last commercial OS for the classic Amigas if the product doesn't get supported after all its a minor miracle this update came out. It cant do miracles with the hardware and a simple OS upgrade wont make you be able to render Blender movies lighting fast, Run smooth html5 ami and web sites or enjoy hd movies etc, but at least it will allow you to run these programs then never being able to and if you upgrade to the limits of a classic machine I'm sure you might be surprised at what it can do, and being on classic amiga hardware I think that pretty neat and respect to all involved in the project.