Tab Key in Word not indenting lists!?

So, all of a sudden when I create a list in Word the Tab key and the Shift + Tab key combo no longer indent/dedent items in a list.

I've tried:
- Both of the "Full Keyboard Access" modes in Keyboard and Mouse. Not like this should effect what goes on in Word, but gave it a shot.
- Resetting the PRAM (doing command + option + p + r)

Note This works normally in other accounts on the system. Only on my account is the tab key behaving this way.

Anything else I should attempt?