posetcay: This doesn't feel like a 21k problem, could there be a bug with rating system?
d4rkm4tter: This was a very sticky issue that every week about 50 problem ratings dropped to under 100 without indication why. So I scanned and corrected those problems every week. The hopefully last scan+correcting is running right now and then it should probably not happen again.
This doesn't feel like a 21k problem, could there be a bug with rating system?