IE changes file extension when downloading a file from a Trac wiki page

[RjOllos]

Hello,

I'm not sure if this is a Trac, SVN, or general browser issue. I
have
a file in my SVN repository for which I have created an export link
on
a Trac page.
[export:/path/to/file/myfile.docx myfile]

When I try to download the file, IE8 changes the file to .zip. I've
tested this on 3 computers running Windows. I've also tested a
number
of other browsers on my machine, and none of them have this issue.

Tested on Win Vista x64:
* IE8 - changes the extension to .zip
* Chrome 2.0.172.39 - okay
* Opera 9.64 - okay
* Safari 4.0.3 - okay
* Firefox 3.0.13 - okay

The only configuration change I have made to my Trac instance that I
imagine could affect this behavior is 'render_unsafe_content = true'.
However, it seems unlikely that is the issue here.
Any help is greatly appreciated!

- Ryan

[RJOllos]

Found a solution, which I posted here:
http://trac.edgewall.org/ticket/7724#comment:8