Mozilla Corp. is considering dropping support for Windows 2000 and the earliest versions of XP when it ships the follow-up to Firefox 3.5 in 2010, online discussions show.

In a series of messages on the forum, developers and Mozilla executives, including the company's chief engineer and its director of Firefox, hashed out which Microsoft Corp. operating systems it should support with the 2010 edition of its browser.

"Raise the minimum requirements on Gecko 1.9.2 (and any versions of Firefox built on 1.9.2) for Windows builds to require Windows XP Service Pack 3 or higher," said Michael Conner, one of the company's software engineers, to start the discussion.

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