We've seen so much Ultrabook news recently we're beginning to think they're catching on. Market research firm the NPD Group has stepped in to confirm our suspicions, reporting a 39 percent jump in sales of premium Windows laptops (900 bucks and up) during the first five months of this year, compared with the same period in 2011. Despite a three percent drop in sales of $700-plus Windows notebooks, the Ultrabook share of this bracket increased steadily to nearly 11 percent. The analysts predict sales of the
