Comment 25 for bug 110585

I had exactly the same problem on my G1 as well. After searching the web all morning and reading all your posts, I was not bothered in following all the steps outlined in the fix ISO. I am using Gutsy 7.10 server insall and had the same problem.
So, what I ended up doing was, used the SmartStart CD 5.5 and did the usual steps there, when the disc is swapped with server ubuntu, when you start up normally and it asks you your language, I used back, which takes you to the menu of install opions. I selected Shell out to prompt. at the prompt I typed: modprobe -r sym53c8xx and hit enter
then I typed: exit taking me back to the menu. And then selected language and followed through - no issue. It is currently installing the base system - huraaah!