Sometime when you view your post or create new post, you get this warning message:
Can not get the available slot. Lost connect with your server.
The issue is with a cookie conflicting with our cache. You can push to staging (a completely uncached enviornment) to resolve the issue, the error itself is indictive of a cookie error.
So please contact your hosting provider to manually uncache each one tocheck to see which is causing the error.