Google is currently unable to process search queries past a certain length. If you reach that threshold, you’ll be greeted by a 414 error, with the message, “The requested URL/… is too large to process. That’s all we know.”
Did you notice a change in the PageRank of your website? We definitely did, our PageRank increased, and we are gleeful about it. This happened because Google has updated its Toolbar PageRank, the first update for 2013. Many website owners have confirmed a change in the PageRank of their webpages oin forum discussion on DigitalPoint.