I got disconnected about two hours ago when my mum picked up the phone, and usually I can just reconnect where I was or somewhere close, when the connection is reestablished.
This wasn't the case this time.
It will let me through the log in screen, to the character selection page, but as soon as I play a character it comes up with the following issue:

I tried to reconnect on my bros computer, but the same problem comes up. HIS account works fine though. <_<
I understand about the firewall issues, I checked and as usual GW is allowed, but this has never happened before. All the talk of ports confuses me to no end. I'm not exactly the quickest to pick things up like that. Hell, I don't even know where to find the port list. :P
If anyone wants to talk me through fixing the issue (if you think you know what's causing it) send me a message or reply here.

Thanks for your help!