XFCE: Install a lighter weight version of XFCE in Ubuntu 13.04

Default XFCE 4 install in Ubuntu comes with a lot of applications that I don't need. So I always install from alternate method using mini.iso to have a bare bones system and yet usable. I have been using LXDE for a while but I think it is time to experiment with XFCE. From a minimal install of Ubuntu, adding XFCE with minimal applications is a breeze, like:

$: sudo apt-get install --no-install-recommends xubuntu-desktop

XFCE: Remove Mail Reader entry in menu

How to remove Mail Reader entry in XFCE menu.

1. As a matter of good practice, backup the original configuration. Create a backup folder in your home directory like ~/backup.
2. Copy /usr/share/applications/exo-mail-reader.desktop to ~/backup.
3. We will be making global (machine level) change so all users will not see Mail Reader entry. Edit exo-mail-reader.desktop using your favorite editor, comment out the line like #OnlyShowIn=XFCE; then add the following line NotShowIn=XFCE;.

XFCE: Installing application that responds to PrintScreen

I have installed a lighter weight version of XFCE in Ubuntu 13.04 (link). This does not have Print Screen support by the default, like pressing Prt Scr does nothing. To get it to work install xfce4-screenshooter like:

$: sudo apt-get install xfce4-screenshooter