CNET writes sales of Windows Vista are significantly down compared to those of Windows XP in each product's first week on retail shelves.
The market research firm's data showed the number of copies of Vista purchased was nearly 59 percent less than the number for its predecessor XP, looking at the first week of sales. Revenue was also down, but less dramatically, with the dollar value of first-week Vista sales off 32 percent from that seen with XP.
Vista went on sale both on retail shelves and on new PCs on January 30. Businesses with volume license contracts have been able to get the new operating system since November.
Although boxed-copy sales were weaker, PC sales during the launch week were up 67 percent over computer sales in the same week a year earlier, NPD analyst Chris Swenson noted.
"Thus, the preliminary data suggests that consumers are getting the message that they need a more robust system to take advantage of some of the new features in Vista, and thus a relatively smaller number are opting to upgrade older machines with the new OS themselves," Swenson wrote in an e-mail.