I would just like to post this for anyone else who is having the same issue. Steven and I have figured out that this is an issue with the way the WordPress integration works with the sh404SEF component. He has added it to the bug list, for a future release.
However, it is easily fixable. In the sh404SEF admin panel, simply click 'View/Edit URLs'. Click the 'Home Page meta' button, in the upper-right. Then, simply fill out the 'Title tag' field and save your changes.
Steven, thanks again for your help.