Je suis retourné. According to Babelfish, anyway. With "have" or without. Still comes out Je suis. But what the heck. You're back!

Now I need a nap. I have a headache. Mal de tête. (I think it is too much milk chocolate, but we have exhausted the supply and have no plans to restock. It's all of that diary that kills me.) Keep up the good work.

Touché.