And they all happened to come from the same unknown person.
The same node reported all 3 blocks, but received them from different sources.
http://blockchain.info/tx/e4dc4da69e06de3439c31d45463c57c9d94c245a172d7a318b570f65821a3ab4
CoinBase
03387603062f503253482f049050495108f800713656000000122f6f7a636f696e4075737374726 174756d2f
(decoded) 8v/P2SH/�PIQ�q6V/ozcoin@usstratum/
most pools are now tagging coinbases
blocks 226871 and 226872 were mined by Ozcoin
226870 was 50BTC
CoinBase
033676030004fa75031a0400000000522cfabe6d6d00000000001c93c8660000000000486920667 26f6d2035304254432e636f6d2035ac1eeeed88
(decoded) 6v�uR,�mm ��fHi from 50BTC.com 5� ��
and 226869 was EMC
CoinBase
033576030651495028090afabe6d6d7ebf280cc05b6ff189621e50b69d21ae6171fc4b73a00e3d1 f9421fb09a27b3d010000000000000000454d43205553310050f8140600000000b20e0000
(decoded) 5vQIP( �mm~�( �[o�b P��!�aq�Ks�= �!� �{=EMC US1P��
which of those is unknown?
oh and variance is fascinating, one day Ozcoin got 6 network blocks in a row 2 days later we had a round that went 9 xD and 40M+ shares, fun times
