Exactly the same time for Berlin. My log says there was some package loss an hour before already, but it totally broke down at 14:30. What a coincidence? Maybe a failed update? And then, why nothing else in the vicinity (like Warsaw)?
I opened a ticket. I guess they're aware of it now and will do what they can.
What I find weird is that the status page shows all tunnel servers as up and running.
@McRip: I feel your discomfort, but you're using a free product with great support so far, and all at no cost (cause it's free!). HE has no obligation to offer anything to you at all. If they decide now to take the Berlin and Prague servers offline for good, it's well within their right (I hope they won't, though! Please don't!!!). So just sit back and wait.