AirPush new installs

Anyone seeing strange new installs numbers? Past couple of days the number of installs on AirPush for my app has been grossly inaccurate. My app gets 1000 installs a day on average. There are days when it’s properly reflected on AirPush, but then there are days like yesterday where it only records around 20 installs. 2 days before it was 1197, but all 3 days before that one were 20, 11 and 22. So it looks like like:
20, 11, 22, 1197, 24, 20.

What’s the deal?
Anyone seeing similar activity?