Start search & indexing services automatically:
Select this option if you want the search daemon to start
automatically when you log in to your session (this option is selected
by default). If you want to use Beagle’s Search functionality, the
daemon must be running.
Display the search window by pressing:
Choose the keystrokes that will display the Desktop Search window by
specifying any combination of Ctrl, Alt, and a function key. F12 is
the default keystroke.