Leopard 10.5.8 runs fine on this 2.26ghz Mac Mini. BUT every time I try to install Snow Leopard, with about ten minutes left in the installation process, I get a kernel panic. The only thing I can think of that is doing this is either 1. I am driving a 30" Cinema Display through a mini dvi to dvi adapter on the Mini -- reducing resolution but still running it fine (I do this with my 12" Powerbook 1.5ghz as well, doing it now as a matter of fact. It makes the picture huge but fine for me at moment) 2. 3rd Party Ram bought at Fry's Patriot 2 x 2GBs ... but passed hardware tests and no problems in 10.5.8. 3. I have not done all the imovie/garageband/idvd/remote desktop/itunes 9 updates in Leopard. I have done all the other updates to 10.5.8 and don't use these apps, so can't see how this is affecting a Snow Leopard update. Any thoughts? It quits and kernel panics during the Snow Leopard update. It was kernel panicking in Leopard, too, when using iPhoto a few weeks ago. Wondering if it is something to do with the Mini Dvi to Dvi adapter (not dual link) to 30" Cinema Display?