Summary: We’re currently experiencing a problem with add-on download statistics on addons.mozilla.org in which downloads through our API (used by the Add-ons Manager in Firefox) are not being counted. No data has been lost and we will be repairing these counts soon.
Because of the large volume of add-on downloads, we parse logfiles to count the number of downloads each day. The static domain was not set up to be parsed for download counts, as no downloads were supposed to occur there, though the downloads did work fine from the user’s perspective. Any downloads from the API since September 14 are not currently shown in statistics dashboards.
We have corrected the code issue, which will be going live this Thursday. We’re also working with the Mozilla IT and Metrics teams to parse the additional logs and correct the statistics. No data or stats have been lost.
This is being tracked in bug 598162.