Last year I bought a new '12 air - 8 gb/128 11 inch. I needed it as I was on the road all summer. Now I no longer travel and it sits behind my office 27inch screen and keyboard, it has never been moved and I don't need the portability. I have iPads for that. I do not do anything on a computer except MS office & Firefox. Today the MBA HD went south and it's being replaced under warranty. I picked up a MacMini and restored everything with my Time capsule passport HD. Works perfect. I'm thinking of selling the MBA when it gets back next week. I never move it and I'm thinking running it 24/7 in a closed position probably did not do it any good. The MacMini is plenty fast enuf and 4 GB is fine. Any thoughts? Am i missing anything?