I am using Ubuntu 12.10, today update notification popped up and I updated the system, then it asked for restart, I was doing some stuff so I restarted after ~30 minutes, after restart, Ubuntu GUI was gone, there was no taskbar or unity, I fixed by entering this commands:
sudo apt-get install linux-source sudo apt-get install linux-headers-generic sudo apt-get remove nvidia-current-updates sudo apt-get install nvidia-current-updates
... these commands fixed almost everything, unity is running, but there's problem when I go in terminal
ctrl+alt+F1, before I write anything, many many messages appear, it says
"Buffer I/O error on device fd0, logical block 0", what should I do?
Here's image: http://i.imgur.com/JBD5x.jpg
Another thing I noticed is that after few about an hour, messages disappear, this error keeps showing up for first hour roughly.