Some People don't like white dots in Ubuntu 12.10 Login screen, So here is a tweak you can easily remove these dots from login screen.
To Remove White Dots from Ubuntu 12.10 login Screen open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:
Install Gnome Shell 3.6 and Extensions for 3.6.
- sudo xhost +SI:localuser:lightdm
- sudo su lightdm -s /bin/bash
- gsettings set com.canonical.unity-greeter draw-grid false
That's it, Enjoy
