Keyboard not working 100% after Ubuntu 13.10 upgrade
Solution 1:
This solution might work as suggested by Andrew @ http://www.webupd8.org/2013/10/ubuntu-1310-available-for-download.html
GO TO:
1) System Settings > Language Support, or you can hit Super (Windows key) to open the Dash, then type Language Support
2) At the bottom part find "Keyboard input method system"
3) Switch between "Default", "IBus" and "None". It may be different in your case, so try each one out. Start with option None.
4) After making the change, you need to restart for the settings to take effect.
Below is a screenshot.