To get the new Ubuntu 10.04 Lucid Lynx working do the following
1. download http://homepage.ntlworld.com/roadrash/lucid/fsam7400-0.5.2.tbzto your home folder
2. extract the tarball
now open a terminal and enter the following
cd fsam7400-0.5.2
sudo make
sudo make install
sudo modprobe fsam7400
sudo gedit /etc/modules
and add fsam7400 to the next line and then save & reboot