Fatal error: Uncaught CurlException: 28: connect() timed out?

I get this error. And it only begun about a week.

Fatal error: Uncaught CurlException: 28: connect() timed out! thrown in .

Facebook forum moderators tell me its a hosting providers error. And hosting providers tell me its a Facebook side error.

I've tried increasing the CURLOPT_CONNECTTIMEOUT => 10 to 20,60, ...

I'm using t开发者_Go百科he 2.0 version of the SDK.

Facebook uses a Round-Robin DNS and sometimes bad addresses get cached by the client. We have our hosting provider clear the DNS cache, that should fix the problem.