Nautilus patched adds the UP button and a toggle button for the location bar. The keyboard shortcut Ctrl+L has been replaced by F12 and works in toggle mode (You don’t need to press Escape anymore!)
Some other versions add more buttons like the REFRESH, HOME or COMPUTER buttons… The “Search” text has been removed.

There’s a customize GUI under Edit -> Preferences -> Toolbar tab.

Installation:

Patch for Nautilus file manager v3.4.2 on Ubuntu 12.04

Download the .deb package from launchpad.net. Then double-click to install via software center, or use this command in terminal:

sudo dpkg -i PATH/TO/DEB

To uninstall run this in terminal(Ctrl+Alt+T):

sudo apt-get remove nautiluspatch