The search results are not what one would expect, especially when click on "Search for all terms". Looks like it still looks for "any" instead of "all". Apart from this I have seen messages like "Page 2 of 1" while browsing some posts.
I know a couple of more websites which use the same message board engine, and they work great. This problem is definitely worth having a look at as it will save time of so many people who rely on the search to find the answer to their question.

Thanks!