Just amazing...
BTC Difficulty 37,392,768 -> 50,636,479 (35.42%) in 2 hours. What a huge jump! I believe this is a record. 13.2 million in a single bound.
currently difficulty is at 37. and is estimated to jump to 50. which is ~%35 increase so, if this trend continues, we are talking ~%100 increase per month
http://mining.thegenesisblock.com/that is why I decided not to buy knc Jupiter at the moment, even if it is delivered in October as promised I still would not make ROI.

if there is a flaw in this logic please point it out I really want to get Jupiter.