How can I remove "frequently used programs" from the menu?
This is not possible with earlier versions of Unity but will be possible in Unity 5.0: see the image in one of the answers here:
To get rid of the "Most frequently used programs" section:
dconf-editor(which is part of the dconf-tools package)
- navigate to
- uncheck the
(click to install)
Configuration of Display Recent Apps and its counterpart Display Available Apps is now available directly via the GUI application MyUnity
The image shows the option turned off - you can click as shown to switch-on the Dash display of recent apps.