[SD-User] Rate window

[iz2eju]

Hello ! Some other infos about the rate window.
It seems that "last 10" count is OK, while "last nnn" and "overall" give numbers that I cannot
explain, for example, last 10 = 0.2, last 18 = 999.9, overall=  999.9.
Anyway, counter seems to be OK, in fact, numbers go down with time.
What is happening ? International settings ? 
With my rates, it is not important, I usually do 1 QSO per hour HI ! but I would like to
understand where the problem is !
Thank you for any help !
73 from Rik IZ2EJU