Those who are hoping for open source software to take hold in the Japanese government or public sector, I suggest you don’t hold your breath (jp.)
Sadly, the Japanese government talks about OSS but there is little action. The best example that we know of is the town of Ninomiya in Tochigi prefecture, who has switched all of their public servants over to a Linux desktop (this was a project funded by the Japanese govt. IPA.)
Japanese public sector merely paying lip service to Linux » 世論 What Japan Thinks
http://arstechnica.com/news.ars/post/20071002-linux-foundation-establishes-partnership-with-japanese-government.html
This doesn’t count?