Problems logging on from Sweden as well. Normally use Firefox, nothing doing. Tried IE - same problem. IE diagnosed it as a firewall problem though not the firewall on my computer but a more remote one. Just as I clicked a link to read more about the diagnosis AB opened up and here I am now - but this is the second time I've written this reply, the first one deleted itself. No problems with any other sites.
Talk talk do it on their connections too, if you use their DNS you get redirected to a landing page giving alternative possible sites if there is no response from the site you're after.
anyhow, not important, it was clearly a temporary burp with something beyond our control.
I had the same problem as well. Thing is this is exactly what happened a few weeks ago when I couldn't connect with IE, FF or Chrome. I was able to connect through my mob though.