We use it at work and I now have disabled it for all the typeahead stuff. Far too many times it guesses what I am doing incorrectly and it made using my TAB key (which inserts the propper two spaces) impossible.

The only place I still use it is for reading and identifying compiler errors. Even then it is only about 50% correct as most times it falls into the "Oh you are right, X isn't the solution. Have you tried X?" I have had few bad interns and even they were smart enough to not forget what they said in their previous sentence.