I thought this piece of news would be interesting:
Danish Board of Technology: Public administration can save billions using Open Source software http://lwn.net/Articles/13301/
The most interesting part (to me):
In Hanstholm municipality they had a pilot project since April which showed that the don't have more problems using OpenOffice.org and StarOffice instead of Microsoft Office as their office suite and each user only needs one to one and half our of training to learn the new office suite. The municipality will now use OpenOffice.org and StarOffice on all workplaces (200 in all) and saves 300.000 Danish Kroners (ca. 40.000 EUR) each year in license fees. They will still use Microsoft Windows as operating system.