Haunted Nail, dont know what to think about this Options

(IMG:style_emoticons/default/insane.gif) Now our house has been getting kinda funny(others say creepy but..) most things as sounds and things dissapearing and coming back
can be put on the account of curius beings but.
We have a nail in the door step to the living room that just keeps popping up the nails beside is not affected i have nailed it in around 10 times already and nailed in 1 on each side to verify its not the board moving.
I meen wtf a nail?
I know they move over the years and so but whitin 25 minutes max it pops up again slowly thou as its being pulled..
anybody got an explanation?

But if they still come out i will rip that door step out and make fire wood out of it

Thats what I would do. But it is kinda creepy about the screws comming out too. Maybe you should stick a cammera by it and see if something paranormal happens before you make firewood. If the wood is fairly new the problem might be the quality. Like the difference from partical board and solid oak or ply wood.