Damar Riyadi sent us an email about an application he's been working on: Gofris, a graphical interface for the command line application called Ofris.
We already covered Ofris, a Deep Freeze like application for Linux so check out that post for more info.
Gofris is not a standard "GUI", but comes with an Ubuntu AppIndicator only - which you can use to lock / unlock the current user, all users or a specific user as well as see the current status.
Important: Gofris is in beta so use it at your own risk!
To try out Gofris in Ubuntu, add the PPA and install it using the following commands:
sudo add-apt-repository ppa:tldm217/gofris sudo apt-get update sudo apt-get install gofris-en
Once installed, you can launch Gofris via the Applications > System Tools > Gofris menu item.
More info, download the source and bug reports @ https://launchpad.net/gofris
Thanks to Damar Riyadi for the tip!