My iPad registers my touch just above my finger. For example, when using a drawing app to draw a horizontal line, the line will appear just above my finger tip (right above the fingernail). But when I draw a vertical line it will appear perfectly centered. This happens in both portrait and landscape views, so it's obviously a software issue. When I draw lines on my iPhone it comes out perfectly centered both vertically and horizontally. Is this a problem for anyone else's iPad?