grid minor

[Laurent Tissier]

Hi,
I am working with octave 3.2 and gnuplot 4.2.5 on ubuntu 9.04_ amd64.
In the same time i can also test my scripts with octave 3.0.1 ,native 
version on ubuntu 9.04.
The command "grid minor" give the result "minor = 1" with the both 
versions but doesn't work on the plot with octave3.2.
Other question with "grid minor" instruction: on semilog plotting i want 
obtain 9 intervals between 2 consecutives ticks, always i get only 5 ones.

Thank you