As I mentioned earlier, I installed the new version of SqueezeCenter for our Squeezebox. This has solved the problem that I was having. I like the fact that it is not necessary that you don't have to manually go to SqueezeNetwork to listen to Pandora or MP3Tunes.
The new SqueezeCenter software has a setting where you can enter your SqueezeNetwork credentials. I think that either SqueezeCenter downloads the configuration from SqueezeNetwork or it proxies the requests through SqueezeNetwork