For those people, who are really disgusted with the multiple windows for more than one terminal, I am here to introduce you with a application which will make your life easier
...and that is called Terminator
This brings the idea of "Multiple terminal in one window"
You can use a single window for multiple terminals. Just open Terminator then you can split the window horizontally or/and vertically to use the divided window as different terminals.
Lets have a look at this(Click on the image to see larger image) -
Its total size is 1,929kB on disk (with an add-on called Registers global key binding for applications -Python binding and without the add-on its only 94.2kB )
In ubuntu 10.10 you will get this software in the Ubuntu Software Center.
You can also use command to get that. Just type -
sudo apt-get install terminator
install it and enjoy :