Handbrake is a great DVD ripper. Unfortunately the version on the Handbrake website is not working. Here is a ubuntu how to for installing Handbrake on Ubuntu 10.04.
First we need to get DVD playback enabled:
sudo aptitude install ubuntu-restricted-extras
Next we need to add the PPA for the Handbrake Snapshots:
sudo add-apt-repository ppa:stebbins/handbrake-snapshots
Your system will now fetch the PPA’s key. This enables your Ubuntu system to verify that the packages in the PPA have not been interfered with since they were built.
Then do and update of the Apt repos lists:
sudo apt-get update
Next you need to install the software. Use the Ubuntu Software Center to install Handbrake. Do a search for Handbrake and install the GTK GUI.
After it installs you should have Handbrake working in Ubuntu 10.04.
Now Start Ripping!