Ipod will not turn on, will not reset will not charge

While typing E-mail the curser will relocate to somewhere in the middle of the text which causes the type to continue in...

That was my assumption when I first experienced it. It is truly a pain. As I said in my request the same is experienced on my wife's computer. To both she and me. It seems to happen sporadically when typing an"e". The curser jumps back into the middle of the text and inserts the continuing text until I spot it. It definitely seems to be specific to both our computers. Any suggestions?