The market has most definitely slowed down in the last month.   Though the statistics remain very strong, they can be a bit of a lagging indicator at times.

The market is still healthy, but it has become clear that the mania of subject-free offers and massive bidding wars has tapered off significantly.  Sellers will need to be more flexible, and Buyers will have more selection and negotiation power than they have had in the past 12 months - that is to say, any at all!