EDIT: Well, I still got that message box, but once I hit "leave site" I got directly to the threat site with my new post without being transfered to the "advanced ..." page.
If you write something in quickreply, the script assumes you have something to submit and if you don't, you will lose it. The latest posts feature will return but in few days.
# of images per post was decreased to 10 to help speed post loading but I will raise it to 15 since I love you guys.