There's a nice German saying:
Help yourself then God helps you!
OK, there is a bug in the new driver or better there's an unnecessery "check routine".
If you have a new Geforce4 AGP8x Board then pay attention
omit (uncomment) the entry
>> Chipset "GeForce4 Ti 4200 with AGP8x" <<
in the XF86Config file. Seems that the driver tries to compare the given chipset definition with its internel table of supported chipsets. If there's a missmatch then you'll be kicked back to the console.
Hope this is a useful hint!