Hi,
I had the exact same issue.
To solve it I setup a softwate restriction policy in Group Policy, that stops ctfmon.exe from running.
Or another option, ive heard that works but never tried is to remove the permissions on the ctfmon.exe file.
Have you also removed the speech / hand writing recognition bitd from office, as they will try to run it.
Cheers,
Paul
If aint broken, dont try n fix it!!!!!