KDE Menuing Kaput

[Bill Vance]

Howdy;

Did an OS re-install, (12.04), to get my sound back, and
both it, and the new kernel seem to be working ok.  There
is, however, a new problem.

I installed the full KDE, educational, games, libreoffice,
the works, along with a bunch of other stuff.  These
usually add a bunch of entries to the launcher menus, but
this time, virtually nothing has been added.

Is there any way to kick the, "menu adder", into proper
operation?

Bill