Acrobat 9 HTML to PDF conversion sets all checkboxes to checked?

Question

When I convert an HTML file that contains checkboxes to PDF using Acrobat 9 Standard or Pro (fully updated) on Windows XP SP3, all of the checkboxes end up checked in the resulting PDF.  I've looked in settings menus but can't find anything that seems to be a relevant option to prevent this from happening.  I've attached a simple test case .html file to this post that you can use to repeat the problem.
To convert the file, I right-click on the file in Windows Explorer, and click Convert to Adobe PDF.  I've tried "printing" the document to the Adobe PDF printer, but that introduces other issues and is not really an acceptable solution.
Has anyone encountered this before, and/or have ideas how to fix it?

Answer 1

Input elements have no such inheritance on the checked attribute.  Furthermore, the input elements in my test case are not grouped together.  They are each encapsulated within separate list item elements, and so no inheritance should take place after the first input element.
Just for grins, I changed the order of the elements (moved the checked one below the unchecked one), but that did not make any difference in the Acrobat 9 HTML to PDF conversion.
I did test this with Acrobat 8 Standard, and the HTML to PDF conversion preserved the correct checked status of the input elements.  It looks to me like this is a bug that was introduced in Acrobat 9.