I've been known to say things like "pleased to meet you" when I really couldn't care less about meeting the person in question; but I'm not sure that it's fair to call this a white lie, since it's a social pleasantry which everybody knows doesn't actually mean what it says.
If you limit "white lie" to mean things like "yes, your vegetable casserole was delicious", then no, I don't think I do tell white lies. (I have gotten very good at not answering questions, though.)
Besides, almost everyone is going to answer "fine"/similar to "how's it going?" regardless of how their day has really been. :)