I updated my PC to Windows 8 and after that installed Ubuntu 12.10. I have 128 GB SSD now partitioned to 36 GB for Ubuntu and rest for Windows 8. Everything worked well, I installed few programs and downloaded updates for the Ubuntu. Ubuntu asked me to restart in order to updates to work. After that restart the trouble began. Now I can only log in to Ubuntu and all it shows after that, is the background image. Windows works correctly, everything shows up in the grub.
I presume that something went wrong with updates. Is there anything I can do for it or should I just install the whole thing again?