I can't connect to this or the tune up service. I doubt I need either of them, but for free I'd certainly try them and find out
This is what I get from Firefox. Is your own firewall blocking your services?
Failed to Connect
Firefox can't establish a connection to the server at server.iad.liveperson.net.
Though the site seems valid, the browser was unable to establish a connection.
* Could the site be temporarily unavailable? Try again later.
* Are you unable to browse other sites? Check the computer's network connection.
* Is your computer or network protected by a firewall or proxy? Incorrect settings can interfere with Web browsing.