There's so many different factors that could come into play..... from the child care side of it it could be perhaps staff have been set a goal on working on parent/carer communication, establishing a rapport with new parents (I know you're not new there but you're a new parent to them) or they could be just really overly friendly staff. And, that they like your DS! I do remember you mentioning your DH was unwell last year too, do you think they would be aware of this? So are they maybe being a little over nice after all you've been through? (Just a shot in the dark with that one?)

I can imagine it must be frustrating, but it does sound like they are trying to keep the lines of communication open. It will be interesting to see what happens with the staff change over soon.