Analyst firm IHS published an important study last week. It predicts that, for the first time ever, PC shipments would drop year-over-year; for 2012, total shipments will drop 1.2 percent. IDC and Gartner agree, noting that third quarter PC shipments fell 8 percent. It's the steepest drop since 2001.While it's clear that use of new form factors such as smartphones and tablets has been skyrocketing over the past few years, this study is the first that indicates that this growth, far from incremental, is taking share from the previously dominant form factor. Of course, some may not accept the study's findings, feeling that rumors of the death of