Easy way to Install XFCE 4.10 Desktop Environment in Ubuntu 12.04

XFCE 4.10 has been released and announced by XFCE development team, it comes with many improvements which include new application finder, a vertical display mode option for the XFCE panel, a new MIME type editor, behavioral changes, and the window manager can be configured to tile windows when dragging them to screen edges. There’s also Alt-Tab improvements and other functionality improvements. For more info about the XFCE 4.10 desktop release see @XFCE_Announcement and @XFCE_tour

by default Xubuntu 12.04 comes with XFCE 4.8. Now, XFCE 4.10 packages for Precise were made available by the Xubuntu Developers team via the official PPA. Those who are using Xubuntu 12.04 can upgrade using this PPA, and those running any other desktop environment in Ubuntu 12.04 can also install XFCE 4.10 from it.

How to Install/Upgrade XFCE 4.10 on Ubuntu 12.04 LTS via PPA

To upgrading XFCE 4.8 to XFCE 4.10 in Xubuntu 12.04, Add the PPA  XFCE 4.10, with following commands below:

sudo add-apt-repository ppa:xubuntu-dev/xfce-4.10
sudo apt-get update
sudo apt-get dist-upgrade

If you are running  other desktop environment (Gnome Shell, Unity)  in Ubuntu 12.04 LTS  and want to try XFCE 4.10, just replace the last command above with command:

sudo apt-get install xubuntu-desktop

For a more pure XFCE, without pulling in all the extra Xubuntu stuff, run commands below:

sudo apt-get install xfce4

If you have problems after install  XFCE 4.10, or the upgrade itself.  just running the command below to solve the problem:

sudo apt-get install ppa-purge
sudo ppa-purge ppa:xubuntu-dev/xfce-4.10