Freiburg tried and gave up http://www.golem.de/news/open-source-freiburg-kehrt-zu-ms-of...

The federal foreign ministry also canceled the transition http://www.golem.de/1102/81498.html

Munich took a decade to do a partial transition with doubtful benefits. Getting that kind of commitment in time and money is not an easy feat.

Niedersachsen had just bought more support for Windows XP.

I'd like seeing all this money going into local software development and open standards.