We have followed the Ajax Crawling Specification posted here and have a
<meta name='fragment' content='!'> tag and canonical urls. We expect
http://www.example.com/foo/bar to be fetched from
http://www.example.com/foo/bar and once with the new version as
http://www.example.com/#!/foo/bar. This is harmful to us since it's duplicate content and also mis-representing out site.
I have tried looking for similar questions here and in the Google product forum but could not come up with anything.