I have tried installing Ubuntu 7.10 on my EX470 but to no avail. I have, however, installed Ubuntu 9.04 onto it. There are still two issues that need to be addressed. Firstly, the sis191 (eth0) is still not working but i have the Linux (outdated) driver which was made in 2004. I tried the above workaround but my kernal is 2.6.28-11 generic and it trashed the system. I reinstalled 9.04 to get back to the begining. The second problem is the VGA output. The screen is extreemly corrupt and difficult to see. This is not so much of an issue as i normaly use remote using VNC viewer, which works fine.  Any help on this will be greatly welcome.