Ohhhh, that's probably why I see that with other people's material nodes. I keep forgetting folks like to float a lot of their panels, and in your case, in a totally different monitor.
You know, there's a little script goodie I have that makes the nodes neat, and I often use it. Unfortunately, I don't recall where I downloaded it. It's called Node Tidier, and if I had to guess, I think it was by Structure, but I checked his freebies at Renderosity, and it's not there.
If I remember where I got it, I'll post about it here.