"Microsoft Corp. today released a new security patch for its Internet Explorer (IE) web browser which prevents users from accidentally or intentionally downloading the new free, open-source Firefox browser from The Mozilla Foundation. [...] Asked whether Mozilla's free email program, Thunderbird, could also pose a threat to Microsoft's Outlook, the spokesman said, 'There is no competition for Outlook. We have not heard of Thunderbird, and we are not now preparing a patch to block it, which will be released in January.'"

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