im new to cex.io but had 40ghash running nicely until today .. but have now sold them to wait for price drop with expected difficulty increase after 371 more blocks .. they say price per ghash will drop before new difficulty level .. then you can rebuy them back at a cheaper price to continue mining
doesnt really answer your question at all .. alleen dat ik in nederland zit en ook in cex.io ben bezig te rommelen .. zo ver so goed!
next time i may let my miners nime through the change in difficulty .. testing testing all the way
succes verder!