Re: "Sorry - no matches. Please try some different terms."
This used to happen a lot but since I fixed a few things it should've got a bit better. It still sometimes doesn't remember your last read position in threads, but you definitely should get results there.
Try marking the whole forum read - http://forum.foofighters.com/forumdi...hp?do=markread
Then deleting all of your cookies relating to the board which will also log you out, log back in, and see how it goes starting from scratch, so to speak.