Gianfranco Lanci's departure from Acer last month came as a bit of a surprise, but looking at some fresh PC shipment data from the IDC, we can now understand why it had to happen. In Q1 of 2011, Acer suffered a precipitous 42.1 percent drop in PC shipments to the United States, falling from 2.3 million units in the first quarter of 2010 to 1.3 million in the first three months of this year. That's matched by a global downturn of 15.8 percent for the company's computer business, taking
