If you want the tab-to-click-feature of your laptops touch-pad to be disabled while typing, there is a handy command for:
syndaemon -i 0.5 -t -K -R -d
The "0.5" defines, that 0,5 seconds after the last keystroke the touchpads tab-to-click is inactive (no special keys like the superkey are affected). The -d argument make s it a daemon, it runs in the background.
It is possible to start this command during boot. Create a file in the following "hidden" directory in your home folder (Press "h" so see hidden directories while using the gnome filemanager):
the mane of the file is not important ("touchpad-config" for instance), but it has to have the following ending:
In our example, it would be:
After that, make the file executable as a program (Filemanager => properties => rights management)
Open the file with an editor (gedit for instance) and paste the following into the file
GenericName=Dont touch me while typing!
Comment=Blocks tap to click while typing
Exec=syndaemon -i 0.5 -t -K -R -d
Save and reboot. This method could also work with KDE, after changing the last line of the script accordingly. I you want the feature to be disabled, simply delete or rename the script and reboot. Alternativly, you can slay the daemon by listing it with ps -x an using the kill command.