Comment 12 for bug 1298700

This method works for me:

1. remove then reinstall ibus:
sudo apt-get purge ibus
sudo apt-get install ibus

2. install missing components:
open "language support" *it will automatically check if there is anything missing from your already installed languages
install missing components following the instructions

3. install components that happened to be deleted when you removed ibus:
open Synaptic Package Manager
Install following components:
    ibus-table
    ubuntu-desktop
    unity-control-center
    unity-control-center-signon
    webaccounts-extension-common
    xul-ext-webaccounts

Pretty sure there are better ways to do it. I'm not familiar with those command line stuff lol.