You haven't been waiting long...trust me. I am a Canadian citizen as well, sponsoring my husband and our applications were received by CIC October 5, 2007. We have yet to hear about an interview. Count your blessings!
Just a note to anyone NOT from the U.S. and might be reading this....my husband and I were told by the immigration call centre that once CIC received our applications his visitor status would be considered "automatically extended" (I am already a Canadian citizen). I asked on 2 different...