An over-the-air software update to the Droid smartphone started yesterday, but it wasn't clear whether the 14 enhancements address a voice echo problem that hundreds of users complained about in online forums.

The Great Recession cast a shadow on all sectors of the economy in 2009. IT fared better than most, however, and the slump did not curb the dynamic nature of the industry. Acquisitions among big vendors continued to reshape the market, operating-system wars extended to mobile battlefields, microblogging became a powerful source of real-time information, and the take-up of small, 'Net-connected devices was stronger than ever. Here, in no particular order, is the IDG News Service's pick of the top 10 technology stories of 2009.