What might be of help would be if users who're currently experiencing this issue state "where" they are from. Country and maybe even area/state.
Within my pack, many people from various locations are affected with this problem. I myself and a few others are affected in the New York / Washington DC Greater areas. Many other USA members such as those from Ohio, Kentucky, Florida, And even as far as California (other side of the country) are affected and cannot get on.
Also many of our members in the UK, England and Ireland more specifically, are affected. Also a member from the Switzerland area is affected.
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I would strongly recommend a quick server reboot just to see if this would quickly fixes the problem. Never hurts to try at least, even if it doesn't work a reboot can help fix any other caching issues that could be brewing. But hey i do wish you the best of luck to fixing this problem.