There is a lot of new chatter in the WebmasterWorld forums, along with random threads at other forums including Google Webmaster Help about Google's search results shifting around and some webmasters claiming huge declines in referrals from Google starting around 8pm EDT last night.

Some are hoping it was just an Analytics issue but looking at the reports throughout the day and this morning, it seems like it wasn't.

Article Source: Google Search May Be Updating