Ubuntu 10.04 uses Nautilus 2.30.0.If you have been using Ubuntu for a period of time,you may be used to using location entry in Nautilus.Nautilus 2.30.0 by default uses the Button Bar to show the current location in file browser.

There are 3 ways to temporarily switch to Location Entry:

1.Use [Ctrl]+[L] key combination to enable the Text Location Bar.
2.Press [/] key and type the full path you want to browser.
3.In Nautilus menu,navigate to Go –>Location…

Following is how to make Nautilus always use Location Entry:

Press [Alt]+[F2] and type gconf-editor.
In next screen,navigate to apps->nautilus->preferences then check “always_use_location_entry” in right: