I have had a couple actually state wrong information a couple of times. Very annoying, especially when their slide had the correct imformation on it!
I also saw someones notetaker (employed by the disbility services as she is dyslexic) taking notes on something, think it was heart conditions, and she got it completely wrong, when both the slides and the lecturer were saying it right.
We told the girl afterwards and said she could borrow our notes if she wanted!