Recently it seems that the addition of an enigma response is having a bit of a problem. The result of this is that users are hitting the Submit button again and again. And this is actually producing multiple responses all with the same text by that user.
So today, I have added in a bit of code to check the most recent response. If you then try and add another response when you are the most recent responder, it will let you know and not add the response. For those who genuinely need to add another response, I will soon add the ability for a user to edit their last response, so any updates can be added to that rather than posting a new one.