So, it wasn't just me being senile. The search function doesn't work so well at the moment. I posted over at ProBoards support, and as usual, Ricky(who is awesome) has come through again. Even though version 5 of ProBoards forums isn't out yet, apparently the search function is greatly improved and he's going to have it installed here.
Probably be Monday at the earliest before it's implemented, but that should help a lot. Much thanks to Ricky over at ProBoards Support for helping me out, yet again. They have a pretty crack support team, and they've helped me out a bunch with this place and it's very much appreciated.
If you're not an idiot like me, the Search function works. I didn't even see the time frame you could search at the bottom, and it turns out if you search for say the past 30 days rather than the last 24 hours, it provides many more results. Proboards has installed the new Search function from the upcoming release anyway, and the results should be faster.
Maybe there isn't a thread for it. I just searched it again for the last 700 days, and it took me right to your post about it, the one above. So, it does work. I could have sworn there was a post on it though.