Caution ....... Just as a matter of interest and bearing no relation to any other posts on this thread, what actual updates would cause any problems? I have a Mac Mini from mid 2010 and I have just installed the latest OS, Maverick, which took 5 hours to download. The good news was that it could be done overnight and it was completely free to folk that were already running Snow Leopard.

The only differences that I have found in the simple day-to-day stuff between using Tiger, Maverick and all of the Operating Systems inbetween is that each update to the OS contains most of the Apps that were found to work in the previous OS. The point being that the updates were already available as a download in the previous OS. Now, obviously there were other differences deep down inside but, when you get right down to it, what actual upgrades are needed? I'm talking about software here, not upgrades to the actual Mac itself like when a change was made from Power PC to Intel.

Cheers,

Steve.