Sorry - no matches. Please try some different terms. Comes up on p3 of new posts

On every Vbulletin forum, whenever you start any search (not just "new posts") and you've paused for a while (usually a pretty long time), when you hit the link for the next page, it will say "no matches."
 
It's because either you have started a new search after you opened up the new posts page OR your session is timing out which has nothing to do with the board but your computer/browser.