I have done
one task in this project and it took 18 hours on my intel(R) Core(TM) i7 CPU 930 @ 2.80GHz, Microsoft Windows 7 Professional x64 Edition. Looking at the forum it seems that it usually takes about 12 hours to complete but during processing I suspended the application which made it run longer. It is supposed to checkpoint every few seconds. I think the biggest problem is with validation in that there is a quorum of 3 and all three need to validate. Because the tasks run so long it is a long time before they are resent out to get run again if one fails or is aborted.
Not a project to start on if you are impatient for credit