I managed to install 9643 Legacy
drivers on my Ubuntu 7.10. There is a little bit of improvement in terms of system response.
Though X still freezes at NVIDIA Logo, I could move mouse pointer without any issues. That was not possible with previous driver releases.
I have attached a new nvidia-bug-report below. I hope this time I got it right.
I had to generate it in Ubuntu recovery mode, since the system had to be cold started.