I ran this code
and all is good.
gsettings set com.canonical.Unity2d.Launcher hide-mode 0
I forgot to mention in my original post that I am running Ubuntu in VMware Workstation - which probably explains everything!
Here is the output from this code
Thanks very much for your assistance - and I dig you're signature mate (pass the vegemite, LOL).
rocker@ubuntu:~$ echo $DESKTOP_SESSION
rocker@ubuntu:~$ /usr/lib/nux/unity_support_test -p
OpenGL vendor string: Mesa Project
OpenGL renderer string: Software Rasterizer
OpenGL version string: 2.1 Mesa 7.11
Not software rendered: no
Not blacklisted: yes
GLX fbconfig: yes
GLX texture from pixmap: no
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes
Unity 3D supported: no