When Apple upgrades to a new Kitty-there are sometimes problems with software compatibility. I am currently using Leopard 10.5 not Snow Kitty. No plans to jump to Lion until I have to.

But then I would rather have the software I use continue to work properly-than to have all the lastest cool OS innovations-which I rarely use.

If you buy from Daz you will find that some of their older installers "VISE" won't work under Lion.

I ordered a full install copy of 10.6.3 from Amazon today-for when my favorite software requires 10.6 or above.