Well written... I wrote a response last night that dives into some numbers and my experiences with helping the Eclipse Foundation move to Git and Gerrit... http://aniszczyk.org/2011/11/23/apache-and-politics-over-cod...

Apache is pretty much the last major open source community to not move to some form of distributed version control. It's either politics (they host the Subversion project there) or negligence in my opinion.