I have an Intel 815 mobo (integrated graphics), but I'm using the AGP slot with GeForce 2 MX 400.
Does that card require nvidia drivers or the nvidia-legacy drivers? Apparently nvidia have stopped supporting older graphic cards since the 1.0.7676 version of the drivers. I'm not sure this card come into that category though. I am not a Ubuntu user so I also do not know nvidia-legacy is indeed the correct name of the package.
Mrugesh
I've tried installing both the nvidia-glx and the nvidia legacy. Also i faced this same problem with FC4 (where i tried both). The last time i had my nvidia drivers working properly was in FC1. Also i tried installing the binary nvidia drivers (both versions ..1.0.7676 and the latest)