CSS Text And Images

I have each post in a “box” with a border and a backgound.

I’ve successfully wrapped text around an image with the CSS float. What I can’t figure out is this. If the text is 1 line or not enough to actually wrap around the image, text for the following post will position itself along side the image inside the box. It’s the same in FF, IE and Opera so I don’t think it’s a browser issue.

What I do to alleviate the problem is put the text under the image. I’d rather have the text to the right and top of the image.