can't change repetitions configuration for keystrokes

[sentinel166]

My problem is, when I open "keyboard and mouse" from the Preference panel item,
I can't change anything about keystrokes repetition frequency or delay. I change it, but
it doesn't matter on the test field, and when I save, it doesn't change more.
What can I do ? It's pretty annoying as I am on a dactylo course ... but you are for nothing in this,
of course.

Thanks in advance.

[Rex Bouwense]

OK. What change do you want to make?

[sentinel166]

I want to cancel keystrokes repetitions or at least make it to slow to notice.
So to put the two bar the rightmost.