Changes
→Gnome
==Gnome==
With these settings in effect, clicking on the title bar, clicking on the window border, and alt-clicking will raise windows, while clicking in for example a text box, will only set focus, without changing the window ordering. This is quite handy for reading instructions from one window and following them in another.
From System->Preferences->Windows, check the option to "Select windows when the mouse moves over them", but uncheck the option to "Raise selected windows after an interval."