I don't know. More info needed. If I honestly suspected a ghost walking up and down my hallway at night, I would be putting up a nanny cam to catch it out. That would be a good way to get some solid evidence to examine.
As yet there are any number of more parsimonious explanations. Sometimes people hear things that aren't there... it happens. Perhaps fatigue or any other number of factors is coming into play. Or maybe old pipes in the house rattling at night due to the change in temperature making it sound like foot steps. Maybe a possum, rats, etc... Maybe someone is walking up and down the hallway and not telling you for some reason. Maybe it is an echo from accross the street, etc... Maybe you're lying about what you're hearing. Maybe you have schizophrenia or another dellusional disorder. Who knows what the explanation is. But all of the above is still a lot more parsimonious explanation than ghosts.
But if you do get a recording device and can demonstrate these unexplained noises, then awesome. Submit it as evidence of the supernatural, have it scientifically evaluated and if proven you'll be up for a big pay day from many different organisations that put up rewards for this sort of thing.
Oh by the way it may be none of those explanations. I have no idea. So don't think I'm calling you a liar or dellusional etc... That wasn't the point I was making. - I do think it would be amazing though if something supernatural could be shown. But as yet, just because something doesn't have an explanation that you are aware of, that doesn't make it supernatural. Otherwise I could classify everything I've seen Penn and Teller do as supernatural. I'm sure there is a reasonable explanation, but I have got absolutely no idea. Like the one he does where he turns the coins into fish WTF!
