Boy, this back pain is starting to get old, isn't it? I am so sorry it has been bothering you so much. I have episodes every once in awhile where my back hurts alot. One time, it was right after I had a baby so I just figured it had to do with that. In December when I would walk on the treadclimber, my lower back would start hurting. A few years ago, someone had suggested to me that I do exercises specifically to strengthen my back. Have you ever tried anything like that? I never got around to it, since that was at a time that I just thought about doing something but never did, but when I am able to, I am considering trying it if the pain starts again while I'm walking.