In case you don't know, NameBar shows the icon and the name of the focused window on the Gnome panel, as well as buttons for minimizing/(un)maximizing and closing the window, ideal for a Netbook (although I also use it for my Desktop PC because I gain some screen real-estate by using NameBar).
Install NameBar 0.5:
For Ubuntu:
sudo apt-get install python-gnome2-desktop
2. Download NameBar 0.5, extract it and copy namebar.py to /usr/bin/ and GNOME_NameBarApplet.server to /usr/lib/bonobo/servers
From the command line, simply open a terminal, navigate to the folder where you extracted NameBar 0.5 and:
sudo cp namebar.py /usr/bin
sudo cp GNOME_NameBarApplet.server /usr/lib/bonobo/servers
3. Copy the content of themes to /usr/share/namebar/themes (or alternatively copy them to ~/.namebar/themes):
sudo mkdir -p /usr/share/namebar/themes
sudo cp themes/* /usr/share/namebar/themes
4. Restart the Gnome Panel:
sudo killall gnome-panel
5. If you don't have Namebar added to your Gnome Panel, right click a panel and select "Add to panel" and add NameBar.
Update: here is also a NameBar 0.5 Ubuntu .deb:
gnome-namebar-applet_0.5-1~ppa1_all.deb (56.0 KiB)
After installing the .deb file, don't forget to restart the Gnome Panel (see step 4 above).
Download NameBar 0.5 (source code)