Yes, sales suddenly went down (by an order of magnitude) a couple of weeks ago and never improved. It seems that the reporting now gets updated every couple of days rather than daily, but it still only indicates some extremely low numbers. So either there is something wrong with the store preventing people from buying software, or they do not report all sales to the publishers. In either case, it really gets unbearable.
And it's July now and I still haven't received a single breakdown report or invoice. And I still didn't get ANY payment, even though Nokia Publish Support has CONFIRMED to me by email that the amount of my ACTUAL revenue is much higher than the payment threshold.