Well this isn't really news but I'll adress it anyway... When I changed the structure around that took a big bite out of the referrals the forum was getting from Google. It hasn't fully recovered yet. To top that I recently made some major changes to the way Google sees the forum which you won't see...
Essentially every page is now written as .html documents which as I seen so eloquently put is "search engine candy". Basically all the content of this site is brand new as far as the search engines are concerned and it will take a few weeks to possiblty 2 months to take affect but once it does it should take off nicely. There was some other minor changes like for example as far as Google was concerned the most important page on this forum was the FAQ linked too from the menu on the top A) because it appears on every page and B) it's the first link. Every link on the top is now denied to search engines so they can concentrate on indexing the good content. It's something I really had to do but now that it's done it's just a waiting game.
Of course the fact that it's 90 degrees out isn't helping things either.
Enjoy the rest of your summer too! 8)