File Insight not appearing for Python download

I've been downloading the Python installer for Windows from

 

http://python.org/ftp/python/2.7.2/python-2.7.2.amd64.msi

 

but the file insight popup doesn't appear. I also have the insight setting as "Show report on launch of files" Always just incase I miss it.  I don't get a report on launching either. This seems to be the case with all the files on the python site.

 

The protocol for the link is http so I'd have expected Insight to have worked whatever redirection may have happened server side (I note the ftp in the url)

 

Is this a bug or am I just misunderstanding how it all works? Probably the latter I know :)