Worldwide PC shipments grew by 14.6% to 69.5 million units in the first quarter of 2008 (1Q08), which was above previous estimates of 13.2%, according to IDC's Worldwide Quarterly PC Tracker. However, the U.S. market slipped to a meager 3.5% year-over-year growth rate as the general economic malaise currently affecting the U.S. economy has begun to impact the local PC market as well.