Please include the information requested at https://github.com/ValveSoftware/steam-for-linux to aid in troubleshooting.
This bug is not a Steam bug, but rather a bug with your OS. It does give a nice heads up to some people, though.
However, I'm unable to reproduce this on Mint 14, 32-bit.
Your best bet is to follow up with nVidia. I've done exactly what it sounds like you tried and not had this issue.
Nothing extracted yet.
I originally installed the 304 drivers. I was prompted to update to the 310 drivers and then needed to reboot. Upon reboot drivers did not load properly, and I was brought to a shell. Entered
jockey-text --list
echoed:
nvidia_experimental_310 - nvidia_experimental_310 (Proprietary, Enabled, Not in use)
xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
xorg:nvidia_experimental_304 - NVIDIA accelerated graphics driver (experimental beta) (Proprietary, Enabled, Not in use)
notice both 310 and 304 drivers enabled. Temporary solution by uninstalling 304 drivers
sudo apt-get remove nvidia-experimental-304
sudo reboot
Installation of experimental 310 drivers should remove 304 drivers
edit: hardware information