I gave the talk while fighting a headache and nausea - or rather, fighting those before and after the talk, but not during. During I was fine. Later on, after Shabbat was over, I let myself get sick and spent the rest of the evening in a daze of misery. But I'm better now.
If you want to read a more or less revised text of what I said, it's on dvorah's journal, or you can just go here.