Hi there,
I got your message, but for some reason can't send you one back!
I have yet to receive sponsorship approval (I'm the one sponsoring by boyfriend/common-law). However, my boyfriend forgot to put in form 5046 - Additional Family Information in the application - CIC sent me a letter stating this fact (I'm back in Canada, so my boyfriend had to resend the form from England!). So I don't know if that's what has held up sponsorship approval. Not sure why that would hold up me being approved for sponsorship. But you never know.
We've just sent the complete form off, so hopefully that's it now. It might be a good idea to call CIC - I'll give it a couple of more weeks seeing as we've just sent off the form. Good luck - hopefully we will all hear soon!