IE6 browser compatibility

Are there any issues accessing a mailbox based on the mail85.ntf template (hosted on an R8.5.1 server), using the IE6 browser?

When I try to view the mailbox, the only thing I see is the database title, sitting above the name of the server. All of the navigation and content is absent. Any clues would be great.

I should note that it works fine in the IE8, Firefox 3.6.6 and Google Chrome 5.0.375.99 (beta) browsers.