In the last week or so, my experience of xenforo.com has become extremely poor and my usage very troublesome.
And this ....
.... appearing regularly.
Hover over alerts, and instead of the list of alerts appearing, the cloudflare 'error' appears in the alerts model window.
Type in a post/reply (like this) and auto-save will automatically redirect me to a cloudflare error page
Load threads/resources, and after a 10 sec, or so, timeout period of waiting, I'll get the cloudflare error or cached version page.
It's approximately 15% of my browsing time and page loads on xenforo.com at the moment, affected by these cloudflare issues.
If xenforo.com cannot get cloudflare working properly, then its clearly not the right CDN (as is my experience with cloudflare) for an XF site. Or is xenforo.com server having real issues and cloudflare reporting these issue indeed correct?
P.S. See my sig for a CDN that will not give these errors all the time
This is an issue with their SSL termination servers in certain datacenters, as Mike alluded to. I experienced the same issue with their HK servers, meanwhile US servers worked fine. It has zero effect on non-SSL traffic, by the way.
BTW @Mouth the 522 you referenced and the 525 mentioned by the OP are different issues.