Re: bugs in 100.14.03
Well, I got brave. I rebooted, went to "telinit 3" as the installer requested, unloaded nvidia, stopped X and kdm. In the end, same result. Reinstalling 9755 worked fine, as I have several updated previously. Through all the previous updates, I haven't encountered this issue before. Seems that there's a problem with NVIDIA's script, perhaps it doesn't work with the new kernel for ubuntu 7.04 (feisty).
EDIT: I just looked in the Appendix to the README file and noticed that the 8800 cards are not listed as supported! Don't know if that's an oversight or there's some other issue there.