I too thought the same way.. but as NO news from google, and no tweets by Mattcutts is making me a little bit suspicious. So much deep crawling, DNS error in WMT.. and no explanations from Google's end for that. There was actually no DNS issues in our server as well as other's.
There is something wrong going on and it looks like it's too much for google to handle. A slight changes in algo always made Matt to tweet or to post in blog (only 1% search queries are affected).. while now i see everything upside down and no update from their end?