From the CIC website:
We received your application for Canadian citizenship (grant of citizenship) on August 19, 2009.
We sent you a letter acknowledging receipt of your application(s), and a study book called A Look at Canada on August 19, 2009. Please consider delays in mail delivery before contacting us.
We started processing your application on May 3, 2010.
Your file was transferred to the Kitchener CIC office on July 28, 2010. The Kitchener CIC office will contact you if additional information is required. The Kitchener CIC office will contact you regarding your citizenship test once all the necessary checks on your file are complete.