I'm near Ottawa and had a similar experience this past summer. We have 4 hives, this being our second summer ... they all came out of the winter in pretty good shape, one was alittle weaker than the others. Earlier in the summer I was questioning Hive #3 ... seemed to have lots of bees, but lots of empty comb and not alot going on? I though maybe I lost the Queen, I was doing alot of inspections trying to figure out things. Then later this summer, we did have a swarm ... it didn't hang around very long (maybe an hour), so we missed it. Don't know for sure from which hive either, but it appeared that Hive #2 was acting similar to Hive #3. We had supers on all the hives, but only two actually produced honey. We ended up with about 120lbs of honey in total. Talking to other beeks, apparently there was alot of swarming this summer once the weather dried up and got nice. We also had some supers with some uncapped honey as well and decided to leave it on, only to find that the bees took it for themselves in little over two weeks ... which was fine by us. I've been hearing also, that it wasn't the best year for honey production either ... cool wet spring hung on, then very hot humid weather for the remaining summer, and now alittle cooler than normal.