See this article in Informationweek: http://www.informationweek.com/news/showArticle.jhtml?articleID=197700789
"Citing concerns over cost and compatibility, the top technology official at the federal Department of Transportation has placed a moratorium on all in-house computer upgrades to Microsoft's new Windows Vista operating system, as well as Internet Explorer 7 and Office 2007".
"The DOT's ban on Vista, Internet Explorer 7, and Office 2007 applies to 15,000 computer users at DOT proper who are currently running the Windows XP Professional operating system. The memo indicates that a similar ban is in effect at the Federal Aviation Administration, which has 45,000 desktop users."
Meanwhile, the State of California legislature is considering has drafted legislation that would mandate adoption of ODF (http://news.com.com/California+may+adopt+OpenDocument/2100-7344_3-6163186.html)
And the IT Director for Germany's Foreign Ministry reports in Heise magazine that per-user licensing costs for its employees, who all use Open Office, is only 1,190 Euro. Other German ministries, which use Microsoft Office, tend to spend more than double that amount, or even as much as 5000 Euro. http://www.heise.de/newsticker/meldung/85977/from/rss09
And South Africa government is moving to open source: http://www.tectonic.co.za/view.php?id=1377
Interested in IBM open client solution? Check this out: http://www.ibm.com/lotus/openclient