I had bad condensation in my headlights, the drivers side literally running water. I drilled holes in the back covers like these guys recommended, and about a week later they are totally dry. shame they're being changed on Thursday under warranty!
i dont know if its made any difference but i also changed my road legal "blue" bulbs for some lovely non road legal blue bulbs, they feel much hotter when you touch the lens. maybe its just me!
they look wicked when turned off and an amazing white light when on...