In IE7 you get a mixed content warning when selecting a user using the new ajaxy single select. I think you can only do this from the Component Edit/Add and Change Filter/Dashboard UIs.

The steps below are shown in ie7.mkv.

1. Setup JIRA for SSL.
2. Restore the select.zip.
3. Go to the "Shared Filters" Admin section.
4. (BUG) Change the owner of "One's Filter". When you start typing the username you end up with the mixed content warning.
5. Go to Project ONE's edit component.
6. (BUG) Try and add a component with admin as the lead. Notice that the get a mixed content warning.