Currently I'm dual-booting Ubuntu along side Windows 7. I recently upgraded to 11.10, and everything was going fine for a bit. However, I can no longer log in with my user account. The guest account works fine. I also tried logging in through the command line (Alt+Ctrl+F1), but to no avail. For some reason it doesn't seem to recognize my password anymore.
Also, I no longer see the secondary GRUB screen:
Instead it will flash a Fatal Error message, then load the GUI. I'm wondering what my options are, I don't have anything important on there that I don't have backed up, so I'd be fine with re-installing Ubuntu entirley.