CNET reports that Firefox is taking customers from Microsoft's Internet Explorer, helping contribute to a five percent share loss between May and last week, according to Dutch research company OneStat.com. The firm, which monitors browser usage among two million web surfers, reports that IE's grip on the market slipped to 89 percent, down from 94 percent. Mozilla's Firefox browser rose commensurably to about seven percent from two percent. A Microsoft executive downplayed the numbers, pointing out that they do not include all the corporate traffic that hits only internal intranet documents, failing to appear on the outside web. He attributed the change in share to a bunch of early adopters and predicted it wouldn't come to much.