Thanks for all the info, I was pretty much convinced that I had at least the beginning of a neuroma, though I was really hoping that someone was going to say that it's pack adjustment or shoes. Oh well, I guess there's no denying it any more. I'm too close to my leave date to get in to see a podiatrist (leave here July 23) for eval and maybe orthotics, so I'm just going to try to rig some cushioning in my boots myself and see what I can come up with. I'm pretty much determined to do this hike, I've scheduled a few extra days so that it won't be a painful death march, I can rest an extra day here or there.