Problem around hash spread is getting worse last days.
Actual figures:
Date NLG Received by Gf7wGA Blocks found % of 576000
2014-09-01 336.000,26530000 336000 58,3%
2014-09-02 412.002,55330000 412000 71,5%
2014-09-03 461.001,62930000 461000 80,0%
2014-09-04 474.000,98565000 474000 82,3%
2014-09-05 497.001,14100000 497000 86,3%
2014-09-06 477.001,76475005 477000 82,8%
2014-09-07 518.001,02310000 518000 89,9%
Apart from a possible 51% attack, there's another problem: you see that other miners quit because Gf7wGA cheats by mining only at low diff.
Not correct. Coins recieved by Gf7wGA is not blockfind x blockreward (1000). He recieves about 39.000 NLG a day atm according to stats of hardcoreminers. If he finds a block (and he finds the most),
the blockreward of 1000 NLG is spread over all miners according to % hashpower contributed.