I've just checked 'Adamant Armor Affection Adventure' and I'm getting the same CRC32's off the files as you did. The packages were the same as in the DAT when downloaded (over the course of the last 2 months), and were the same up to a few days ago too. It's not unusual for a package to get 'replaced' on that repo I've found, but that's usually the odd one of two - this is certainly the first time there's been so many!
Not sure if OpenPandora have implemented some sort of change the last few days, I will need to investigate...