Hello March2014Apply,
CIC will request for additional documents only if the information they are seeking has not been submitted with the initial application. Some of the applicants have received their visas without the ADR from CIC so I believe you shouldn't worry about it too much.
Anxiouswife, ZZW, myself and other members of this thread have shared the additional documents requested by ADVO so you if you think you have submitted these documents in your application, then it is unlikely that you will hear from them.
I do know it is frustrating to see no updates from CIC but unfortunately we just have to take it in our stride. I check ECAS, my email and this thread for updates almost a 100 times a day. :