Ubuntu Feisty comes with an xubuntu-desktop package delivering a Xfce4.4.0 Desktop environment.
However, some of us (like me) want the latest of the latest, so if you are not faint hearted and feel like upgrading your Xfce desktop to the latest stable version here is how.
sudo apt-get install build-essential libglib2.0-dev libgtk2.0-dev libxml-dev libvte-dev libstartup-notification0-dev libhal-storage-dev libdbus-glib-1-dev libxrender-dev libxdamage-dev libjpeg62-dev libxml++2.6-dev
Now the needed dependencies should be installed, it was all I needed and hopefully that goes for you too.
Now its time to download the Graphical installer:
Now simply run the installer with this command:
sudo sh xfce4-4.4.1-installer.run
The installer should after uncompressing fire up and before continuing you can even check if there is a missing depency. I could not find the xrender dependency but it did not cause any problems with the installation.
Make sure the alsa mixer flag gets unchecked! Its not needed in Ubuntu and will therefore break the installation.
The default installation folder is /usr/local/ and suited me fine.
The installer compiles all packages and takes about 20- to 30 min.
If you wish you can easy remove Xfce4.4.1 in: Applications > System Tools > Software Uninstaller.
I noticed that in GDM there are to different entries for Xfce4 now, but both lead to Xfce 4.4.1 so it seems it overrules the original Xfce4 of (X)Ubuntu.
Beryl runs perfectly the latest Xfce4 and I am enjoying it greatly.