Ask HN: Cloudflare not letting me through?

Right now I can only see HN via a proxy. My normal connection has been giving me an error all day - is there anything I can do to fix it. The proxy is not allowing me to use search, even though I have theoretically enabled Javascript, so I can't see if this has been asked already.

Yeah, that didn't work. Try again, perhaps later?

Web server is returning an unknown error

There is an unknown connection issue between CloudFlare and the origin web server. As a result, the web page can not be displayed.

Ray ID: [some hex stuff]

Your IP address: [my IP]

Error reference number: 520

CloudFlare Location: London