Lost Unity

[Jim Byrnes]

I have 11.10 installed in VirtualBox (on 10.04) and it had been working 
well.  Today I installed the Compiz settings manager.  I then started 
going through all the settings just to see what was available.  The only 
thing I knowingly changed was the width of the launcher. I set the 
slider to its minimum.

At some time while I was paging through the various settings the 
launcher disappeared. I just thought that it was hidden, but after 
closing the setting manage I could not get it to reappear.  In fact my 
desktop is displaying nothing except its background and and a grey menu 
bar at the top with File Edit View Go Bookmarks Help on it. The menu 
items work and right-clicking on the desktop shows up the normal popup. 
If I start typing a text box opens in the lower right hand corner but 
hitting enter just closes the window.  The esc and windows keys do nothing.

Any idea on how to get a working desktop back, short of reinstalling?

Thanks,  Jim