I am having on again, off again problems with my keypad. It started with my backspace acting like a 'page back' button. Now there will be times when all my characters are mixed up. For example, crossties will come out 'crssostie' or 'rcsostsie', etc. Just happened again when I was signing in. I have changed keyboard style options, but no change. It seems to happen anytime my charge is less than 100%, but does not happen every single time. Is there a processing issue, a sign of internal problems, or? We already sent it in because of a moisture issue the screen was seperating from the film underneath, and it had started having sporratic problems. We have had this one for about four months now.