Two studies showed that Microsoft's Internet Explorer's share of the browser market dipped below 90 percent, largely the doing of gains made by Firefox, according to CNET. Where Microsoft had previously pointed to WebSideStory figures as a source of information indicating IE's share was relatively stable, that companies updated figures show IE share down about half a percent per month starting in early December 2004, down to 89.9 percent of the market on February 18. Another research firm, OneStat.com, pegged IE share at 87.3 percent. Whether because of share concerns or because of delays in its planned new operating system, Microsoft reversed itself and said it would put out a new version of its browser.