Quite the big "ouch" to the Redmond giant: the Department of Transportation (DoT) and the Federal Aviation Administration (FAA) has banned Windows Vista, Office 2007, and Internet Explorer 7 from its offices. They are considering switching its operation to Macs and PCs running Novell's SuSe Linux.

The rather harsh policy was sanctioned back in January, but through the enactment of a moratorium, the blocking of Vista upgrades is still in effect. 15,000 users at the DoT and 45,000 employees at the FAA have been barred from upgrading to any new software from Microsoft.

The memorandum, dated January 19, was distributed to address concerns about licensing issues, upgrade costs, and backward compatibility with their existing key software and systems. They aren't scrapping Vista altogether if issues could be resolved, although they are considering alternatives to just going Vista all the way.

Aside from educational institutions and research associations, it seems that even the U.S. government is affected by the cost and compatibility problems regarding Bill Gates' new "Wow" product that shuns many XP compatible programs on its questionable platform.