hello folks ,
we are all in the same boat , i emailed the embassy and got a reply .
firstly make sure your application has exceeded the average processing time
secondly , all the details should be correctly mentioned in the email
check this out , if it helps :
http://www.canadavisa.com/canada-immigration-discussion-board/valuable-info-for-applicants-waiting-for-visa-for-more-than-3-weeks-t235546.0.html