I am using Ubuntu 11.10 and the workspace switcher button in the launcher has stopped working. Not sure how or when this happened, or what I might have done to cause this problem. But when I click it, it does nothing and I cannot remove or move it either.
All the other buttons in the launcher seem to work correctly and I can move them around freely.
I can still use the keyboard shortcut keys to switch from one workspace to another. So, it is not that I only have one workspace.
So, how to make the workspace switcher work?