Tapping is the same as mouse clicking, I believe.
If the touchpad works fine on your T60, why mess with it?
Because I needed to test it in a machine where it works fine : to know what it does, before adding it for the future versions to come, in PCLinuxOS Openbox.
Thanks for you answer.
I have one more question, does such a thing as "ksynaptics" exist, or do we only have the library for it ?
$ apt-cache search ksynaptics
libsynaptics0 - Library for supporting ksynaptics
libsynaptics0-devel - Development Library for supporting ksynaptics