Same here I think...
When I upgrade my drivers past 1.0.4191, I have problems. I boot up fine, and when I type startx, everything starts loading, but then my screen goes blank, and no matter if I switch from x to a term ot back again, I have no video. I can ssh in, so it's the video drivers. I have a gainsward geforce 4 ti 4200.
There is nothing in the logs and the xf86config-4 is normal, there isn't anything special in it, so any ideas?