Layout/Formatting is Wrong Only on Page 3

My blog can be viewed here: http://www.infavoroffuzz.com/blog/.

On page 3 (http://www.infavoroffuzz.com/blog/?paged=3), you can see that the layout/formatting is messed up: background color is wrong, side bar is at the bottom, etc.

I have NO IDEA what’s going on, here. Can somebody please give me an idea of where I should begin? (Please keep in mind that I’m new to this!)