Harlequin Macbeth

I downloaded 2.5 and proceeded to log into Basic mode. I logged out and attempted to log into Advanced to no avail. It kept reporting a DNS prolem. I restarted the computer, no luck. I uninstalled/reinstalled, no luck. I even plugged my ethernet cord into my laptop, because it kept telling me to check to make sure that I can connect to secondlife.com. I could. My internet was fine. I can log into Phoenix just fine, as well. Is this a viewer issue or something on my end?