Anyone else seen a bug with clear: both; on Safari? It seems like it is being a bit overzealous in what it is clearing. As you can see in the image here, it seems to be clearing the space from the <div> on the left, which I would think is out of the scope of that clear: both. It looks fine in Mozilla (and I believe IE).
Update: If you are looking at this at Safari you'll most probably see the behavior right now.