Hi there,
Just added myself to the list. I am a Canadian sponsoring my American husband of 7 months. I am in Hamilton, ON and he lives near Detroit, MI so fortunately, the wait hasn't been terrible; though of course we want it to process quickly.
We paid all the fees in advance, got the medical done on 4/4/2014, completed the application in May, but didn't mail it until 6/16/2014 because we were missing some documents. It was received on the 17th, so given the current trend, there should be some action mid-August! I've been looking at timelines posted by others in a similar situation (US to Canada) and so far it looks like it's taking less than 7 months from start to finish, provided everything is filled out correctly and there are no additional requests. Hoping for the same.