space above top post

Hi! Sometimes when I make a post, there is this gigantic space above the post. For example: http://www.gigablonde.com/blog/ (On my screen in Internet Explorer, the topmost title “Creating anything I desire” begins waaaay down, even with the category “smelly boys”).

I’ve had the blog for about a month or two but this space never appeared until today. How do I get it to go away?