I also would like to know what the latest version of OS X is that's compatible with Media 100i. I have an old system that I inherited in fully functional (already integrated and running) form. I'd like to reinstall everything from scratch, make sure that everything's fresh and clean, etc., then make an image of it to be able to restore in the event something gets trashed. While I'm at it, I'd like to setup a standby Mac to move it to in case the first Mac dies. Does anyone know where I can find out what the optimal OS version, Mac Model, etc. are? I have a few other (even older) Media 100 systems that I should do this with also, including old Vincent-based systems in 9600 computers. Is any of this information available anywhere?