I want the launcher to show when I move the cursor to the top-left corner instead of the left edge because the way it is it tends to show when I don't want it to. How can I do that_
For 11.10 and earlier
To adjust the reveal mode of the Launcher, you can use compizconfig-settings-manager . You can install CCSM by running the following command in a terminal:
After installing CCSM, open it and click on 'Ubuntu Unity Plugin'.
Click on the option and click on the option for 'Reveal mode'. There, you can choose which part of the screen should trigger the launcher.
There is a much easier way to change the reveal mode of the launcher in 12.04.
To do that, you can right click on the desktop and click 'Change Desktop Background' option.
After that, in the 'User Interface' application that appears, move to 'Behaviour' tab. There, you can change the 'Reveal spot' of the launcher.
Right now you can't do this in Unity on Ubuntu 11.10 You can try out GNOME 3, or test the amazingly stable 12.04 beta, in which they have implemented in Unity 5.2, or you can install the Unity team's PPA and use the beta version of Unity. 11.04 also had this feature. But if you want to keep your Unity version, Ubuntu version, and desktop environment, you'll have to wait for 12.04. Sorry.