This version new feature: Customization of icons for tags in tree view. Simple put a png icon with the same name of any tag in the icon folder to have it in the tree view. Download here: http://www.mypasswords7.com
It was almost 1 year ago that I got disappointed with Ubuntu Linux; After more than 4 years that I had been using it as my first Desktop operating system I left it for other distributions. They become somehow against Gnome 3 shell and developed their own Unity. The unity was not as light as Gnome 3 and was not supporting all hardware (in compare to Gnome 3 shell).
Since then I have used several distributions. Debian (my favorite server distribution), Fedora and Linux mint.
After 1 year I installed Ubuntu 12.04 2 days ago and I can say they have solved hardware compatibility issues and it is not that much sluggish as it used to be.
Still I do believe Gnome 3 is more user friendly and they have their own philosophy in desktop, but Unity's sidebar is still originating in MS Windows taskbar.