It’s not like Hewlett-Packard has never trumped Dell before in PC shipments, but the back-and-forth has continued today with the newest computer shipment reports. According to Gartner Incorporated’s freshest analysis, HP has snagged the number one spot in domestic PC shipments from Dell, who had most previously held the crown.The report noted that Dell’s shipments in the United States dropped 16.3% to “just” 3.9 million in the first quarter of 2009, while during the same period, HP’s shipments grew 11.1% to