Hey down
What does it actually say when you can't get into chat?
I know that when I use the library computers, I can't get into chat because it says it's blocked on port 8080; that's the usual port for IMing and obviously the library ppl have set their firewall to block it. A firewall will continue to block until it's allowed; and then (for Norton) even after it's been allowed; I've had that problem with Norton's firewall. Unfortunately I can't remember how to allow port 80. There is somewhere a list of exceptions where you can allow certain ports and decide the traffic too (incoming/ outgoing): maybe that would work? You could also try adding Psych Central to a list of 'safe' sites and see if that makes a difference.