In realta, the autoprune was there for quite a while before the forum was updated. Until recently the moderators had only moderating permissions, and so were unable to do anything regarding the auto-prune, which was added by one of the administrators (either Ilan or Victor).
When Ilan decided that a new forum look was wanted, and the other moderator/admin stepped down, we were given admin permissions so make necessary changes. One of the first things I did was to turn off any auto-prune that was activated for any forum, since I know that the games rely heavily on third party add-on content, and I wouldn't do anything to compromise that, and the links and topics to avalible downloads. I was shocked when I noticed that so many were gone, and that auto-prune had been activated.
But since so many have been lost, I do too urge anyone that has had their topic lost, please upload them again.
If they're too big for the library, http://www.fileswap.com
is a good hosting website, which is free, and you have an account where you can manage your uploads. Of course, there are many file hosting sites, but I've found this one to be one of the better ones. Download speeds are good there, too