The middle of a story is dreaded for many reasons. Whatever your reason may be, you can never have too much advice on how to deal with it, right?
I've found two interesting posts on the subject:
Planning Your Novel's Middle by Janice Hardy
Testing the Middle:Subplots by Editortorrent
Now, I can't take credit for finding these two wonderful blogs. All credits go to Roni Loren of Fiction Groupie. Every Friday, she offers up some great links in her Fill Me In Friday: Best Links of the Week posts.