Yeah.....we've been getting a lot of denial of service attacks lately. The sys admin put us behind a cloud fare which protects against that, but has been causing issues like this. What I have found is that if you don't paste any HTML or formatted text into your post then it should work. If you are copying text from a website, paste it into Notepad first to remove any formatting. Then you can paste it into the post. Pain in the ass, I know. We are working on trying to get this resolved in the meantime.