OK well if anyone else is having my problem as noted a few posts back, here is your solution:
Originally Posted by sgage
Running apt-get in the terminal (thanks for making me think of that), and piping it through less, I noticed this:
So I did:
Building only for 3.5.0-17-generic
Building for architecture x86_64
Module build for the currently running kernel was skipped since the
kernel source for this kernel does not seem to be installed.
sudo apt-get purge nvidia-current
sudo apt-get install linux-source linux-headers-generic
And all is well...
sudo apt-get install nvidia-current
Edit: Left out a step. Also, I suspect that you may only need the headers, but I didn't feel like any further experimentation, so installedboth to be sure.