Well, this topic has turned into a haunted-house thread.. and that is awesome :)
I didn not think the house was haunted itself. we moved in, in 2002 and I really have never found or felt anything strange in the house itself.. it seems like a very "clean" house in that regard.. (I wish it were clean in other regards! lol..) But there is a decrepit barn that is falling down.. a farmer died in there years ago from succombing to methane fumes. Had to be a horrible way to go; gasping for air and all. Mark even knows that the barn is haunted (he is a big skeptic on hauntings..) He was out in the still-standing part awhile ago, spray-painting his truck; he made me come in until he was done because he was "freaked out!"
I think that in the house, it is hard to say what the sounds were. But come to find out, my LLord left one of the upsatairs windows open; it was windy, and I bet that something just blew over.