Internet Explorer 9 has been downloaded 15 million times by Windows 7 and Vista users since beta was unveiled 10 weeks ago. The 15 million downloads represent 0.38% of the world’s total browser usage. IE9 still commands less than half of a percent of the worldwide market for Web browsers. Microsoft lost ground in the browser market in November, with all editions of IE combined now claiming 58.3% of users, down from 59.2% in October. Google Chrome claimed most of IE’s lost share, upping usage from 8.5% to 9.25% in just one month.”]