Kind of moot now, but I found another address which has had a shitload of funds sent to it, around the same time that the other two addresses were highly active (about 8-9 hours ago)

      23000000 -> PR5mGbfxFkoJnn4h2xitckPYTDqBytB3ia
      95000000 -> PR5mGbfxFkoJnn4h2xitckPYTDqBytB3ia
      80000000 -> PR5mGbfxFkoJnn4h2xitckPYTDqBytB3ia
      97000000 -> PR5mGbfxFkoJnn4h2xitckPYTDqBytB3ia
      98000000 -> PR5mGbfxFkoJnn4h2xitckPYTDqBytB3ia
      97000000 -> PR5mGbfxFkoJnn4h2xitckPYTDqBytB3ia
      96000000 -> PR5mGbfxFkoJnn4h2xitckPYTDqBytB3ia

total: 563,000,000 PCN

So all up that's around 1.3 billion PCN worth of the premine sent to only 3 addresses, all within the last 24 hours.

May still find some more... not looking too hard though.