If Windows 8 is the ticket to a bounce-back in PC sales, it's going to be a long, slow recovery. At least, as long as you ask IDC. It estimates that worldwide computer shipments in the first quarter of 2013 fell 13.9 percent to 76.3 million, which is the steepest quarterly drop the research firm has recorded since it started tracking PCs back in 1994. While the exact factors at work aren't clear, IDC blames it on a mix of customers spooked by Windows 8's unfamiliar interface, the continued
