I had a thought that this may be a web-browser related issue so I have now tried Mozilla Firefox (build 7.0), Internet Explorer (build 8.0), and Google Chrome (build 14.0.835.186), with no success. The strange thing is that today when I click on configure web app it displays the configuration I have chosen, but the web app itself still displays in the default setting. This is extremely frustrating. Is anyone else able to configure a web app?