If you want to switch between your Workspace easily in Ubuntu Linux Unity desktop then there is an indicator applet written for that purpose. Once installed it lets you choose things like...
*. How many workspaces you want.
*. Within how many rows that you want them to be displayed.
Well, that's about it. As said it's pretty simple and straightforward. You can install Indicator Workspaces in Ubuntu 11.04, 10.10 or 10.04 by entering the below command in your GNU/Linux Terminal.
sudo add-apt-repository ppa:geod/ppa-geodIn Unity's dash, search for "indicator-workspaces" or just enter it after using "Alt" + "F2" keys on your keyboard. That's it.
apt-get install indicator-workspaces