I think I figured out why people are getting the 'please wait 5 seconds' bit. I just got it when I did a reply with quote and the auto-save had just come up and I didn't type anything after that. I think the auto-save is doing a pseudo-'submit reply' and then when you go to click the button to do just that it completes the process, but also triggers the 'please wait' bit. How to fix this? I have no clue, but I think that is where the trigger is starting.