Thank you for the good analysis regarding the RAC. I noticed that WCG only granted me 1 valid task per day and machine over the Xmax days - even though all my 4 machines when crunching full time. Maybe such a behavior could explain the magnitude drop?
Regarding the rise in GRC value - i think one should a bit

Hello, i would like to point out that a practical, widespread and usable crypto currency needs to fulfill 3 criteria:
1.) Low transaction cost - e.g. to buy a pizza without large addition costs
2.) Stable curency - e.g. if you sell the pizza you want to be sure that the currency is stable for the next days.
3.) Fast transaction - both people in the pizza place do not want to wait log to perform the exchange (pizza vs. currency)

I think Bitcoin does not fulfill most of the criteria today. However, we gridcoiners should not hope for an infinite rise in value.

best

Lars