I used your link, Februs, and got the same result. I've tried links from other sites, I've Googled it and tried that link, all to no avail. I'm really not doing anything differently from the other hundreds of times I've successfully visited the site.
And apparently it not just me. I just read on Erica Scott's blog that she has not been able to get in since last Wednesday (Dec. 12) and has tried most of the same solutions that I have. And according to the responses to her post, many other people are having the same problem.
So it seems like its a random thing that is not effecting everybody.