I just tested it and don’t know how your getting that.
If you have more posts than what you choose to display on front page.. pagination kicks in and a link is displayed to view more posts.
If I choose to display 9 or 10 articles the space between the articles and the footer stays the same.
Make sure there are no empty widgets active in the footer.
Question #1: What browser are you using?
Question #2: Are you using any plugins?
I just realized if your background color and your link color are similar… what may be happening is when that pagination kicks in and a link is shown to see more posts… that pagination link appearing may be what is creating the gap. We just can’t see the link.
Just a guess.
Let me know what happens.
anything else let me know 🙂