What is ctfmon.exe And Why Is It Running?
 

Ctfmon is the Microsoft process that controls Alternative User Input and the Office Language bar. It's how you can control the computer via speech or a pen tablet, or using the onscreen keyboard inputs for asian languages.

If you are using any of the above, you should leave it enabled. For everybody else, we'll get to the job of disabling this annoying service.

http://www.howtogeek.com/howto/windo...is-it-running/

I already had it killed but its worth to do it.