Great Firewall of China blocks Google.com
According to GreatFire.org, a service that monitors blocked websites and keywords by the Chinese government, the Great Firewall of China has censored Google.com and some other Google services during the 18th Party Congress.
Read more here - http://www.ibtimes.co.uk/articles/403467/20121109/china-blocks-google-com-gmail-maps-docs.htm