Almost on a regular basis, I post in the Quick Reply widget and, after clicking on the button to post, forces my browser (Firefox) to ask if I want to leave the page. Well I have to do that if I want to post! So I click "Leave Page" and wouldn't you know it, the sudden forceing of terminating the script causes double-posting to happen. I believe it's just because Quick Reply is its own separate widget. It asks me to leave the page even if I don't want to post what I have, just so long as I click inside the text box.