There is a lot of conversation here about the addenda process. I will take a stab at addressing all the issues. Let me know if you have further questions.
We update the addenda at least bi-monthly. During the summer we aim to have them updated monthly. We do our best to verify the information on every card and comment that comes in before posting it. This takes time. If we can't find confirmation of the item, we hold the card to see if anyone else reports the same thing and try again to confirm what we are told. We are human so we make mistakes and either miss things or misstate things. If you believe we have missed something you sent in, please feel free to follow up with us. Sometimes the online/email items fall into the internet black hole and we never see them. Sometimes the post office loses the cards before they get to us.
The person who receives the online correction cards is on vacation right now so response to anything submitted is going to be a little bit slow. I'll scan her email more closely to prevent the time urgent items from being missed.
Regarding Atlantic Coast 6: The 2011 version started selling AFTER we posted the August 2011 addenda updates, that is why you will see items for the 2009 addenda dated August 2011. (The date you see on the addenda items is the date we posted it, not the date we received it.) I believe Sales JUST started selling the 2011 version of that map in the last week or so. I have updated the form so now 2011 appears and shows no addenda items.
As for Atlantic Coast 7, I'm not sure what technical glitch was going on there but I think I have it fixed at this time. As of this morning, there is only one item for the 2011 version of the map.
I know this process is confusing from the outside. Some days, it can feel that way from this side as well.
I hope this clears up the questions Spokey had that started the conversation. If not, ask again and I'll do what I can to clarify.