This is possibly not strictly Discourse-related, but since I followed the Discourse on Digital Ocean tutorial rather scrupulously, I figured there might be other people with the same problem, and who can hopefully provide some hints at resolving it.
I’m administrating a Discourse instance at https://forum.appleseedhq.net/ (note: HTTPS). When I refresh the page (by pressing F5 or CTRL-F5), it often happens that the avatar images do not appear correctly (the images don’t load), and there are many such errors in the console:
Failed to load resource: net::ERR_CONNECTION_CLOSED https://forum.appleseedhq.net/user_avatar/forum.appleseedhq.net/narann/25/15.png
Eventually all the avatar images end up loading correctly, usually after many refreshes.
The problem happens both on Chrome 39 and Firefox 31.
Any idea what’s going on? Could it be SSL-related?