As I understand the problem, it is related to the Microsoft SQL Server. That issue is bigger than MCA, Kentico or Brenden. We recently switched from the GoDaddy host to another host site and that fixed several of our problems.
One temporary solution would be to not use the same "reply buttton" once they disappear. (Don't go to the first one that appears on the list).
The second, wiser solution might be to create more finite threads for some of our discussions. Maybe instead of "Memorabilia" it might be "Signs" or "Mugs" or "Plates" or "Calendars" I think the Food thread got started as Jersey Cream!!! It has taken on a whole new life after strawberries!!!
The same can be said about "Wallis Tractors" That is a huge topic. That could be easily broken down to "Wallis manifolds" or "Wallis steel wheels" or "Wallis binder hitches" or "Wallis starter buttons"
Make the first word the general topic then follow with a specific word.
You might ask why do other sites not have this problem? I have never seen another site that posts as many pictures as the MCA site. (of course my experience is limited but...) That is a nice problem to have. If you look at "TYMag.com" they have thousands of posts but there only about 10-20 posts per thread. I did see one site recently with over 61 pages of posts on a single thread but not more than 10 pictures were attached to posts!! So we are somewhat unique in how we are using the web site.
Just keep up the great work, keep sharing and we will all learn from the experience!!
We will continue to search for answers!!