I had the same problem when booting up my laptop after installing Slackware 12.0.

I could install fine - so I knew the terminal should work!

It turned out to be udev.

I rebooted with the Slackware 12 DVD after installing, logged in as root and mounted my hard drive to /mnt like this:

mount /dev/sda3 /mnt

You'll need to substitude your hard drive partition instead of "/dev/sda3" of course you would know this after doing the installation.

Now go to the /mnt/etc/rc.d directory and remove the executable flag from the rc.udev script like this:

chmod -x rc.udev

Now reboot and all done!

Hopefully this will work for others. I have no idea yet why udev is crashing, probably just a bug due to unknown hardware...

I am having the same problem with slackware 10 and I have the same Nvidia G0 7600

As far as the runlevel...try using the runlevel command (/sbin/runlevel). man runlevel if you don't understand the output. Again, as said earlier, the default runlevel is 3 so unless you changed it that is where you will be.

I don't own an Nvidia card..yet, so I am not much help with that portion.