TextBox & Numeric Pad

I have a problem with the TexBox a my sliders. When I type a value with my numeric pad, it print a square instead of the number. there just the ‘5’ which is working. Another pb is that the “.” (point on the numeric pad) doesn’t print anything.
Is there any solution to this pb??

Well which platform are you on?

and you haven’t got numlock off have you?

I am on Linux (Mandriva 2006).
Yes I have num lock on.
I have noticed that it make it also on the fileChooser. So I think it will make it on every textBox.