Windows (Shells) in Fedora 17 (with Gnome 3.4.2) do not display the Minimize and Maximize buttons on the titlebar. I (like many) find it hard to work without those buttons. I searched on the internet and there are two ways to do this.
Launching the gnome-tweak-tool (Alt-F2, type gnome-tweak-tool) opens a window with title ‘Advanced Settings’. Navigate to ‘Shell -> Arrangement of buttons on the titlebar’ and change the value to ‘All’.