The first round of “ultrabooks ” the thinner lighter faster machines that Intel (INTC) cooked up to reinvigorate the PC market and not incidentally sell a new generation of its chips was unveiled late last year. They didn’t set the world on fire in 2011; best guess is that fewer than a million were sold by all the brands put together. Everybody involved says they didn’t really expect ultrabooks to take off in 2011 and to give them credit they said the same thing last year as well. But now it’s 2012 and it looks like this is the ...