this happens to me as well. What I do is hit the "Ctrl+F5" key several times and it usually gets me in.
However, you can do this as it works great for me. After you launch the Desktop, using Chrome (I have not tested other browsers), type in the address: http://localhost:4848/hub/my/work
This will display the local Hub and you can work from there instead of the Desktop.
Try it and let me know.