Joined: Sep. 2006
I upgraded to Mendel 1.4.1. It acts differently with the parameters I tried in the original version. I started with the defaults changing only the fraction of beneficial mutations and maximum effect of beneficial mutations parameters.
Now the fitness increases in a linear fashion. So they must have fixed a major bug in between versions. I'll continue to test over the next few days.
You never step on the same tard twice—for it's not the same tard and you're not the same person.