I got a phone call about 2 weeks after I'd sent in the full. Of course, being particularly plagued by doubt at that point, I didn't catch on that when he said "I love this book and really want to represent it, but it needs some work first," that he wasn't asking for an R&R, but actually offering rep. I didn't catch that during the subsequent 1 1/2 hour phone call a few weeks after that (when we went over the revisions that needed to be made to the MS) either. It wasn't 'til I was nearly ready to send back the revisions (after about 8 weeks of work) and had emailed to say I was nearly done, that he said "I can't wait to start sending this out in January," and I realized he meant "I love this book and I really want to represent it, but it needs some work before I send it out."
Hah! (Moral of this story is, when in doubt - ask for clarification.)