I wasn't aware the K1 did that. However the K2, K3, and DX all flashed after every page, as do the Sony readers up through the x50 series, and MOST (if not all) of the others. So it isn't like a page refresh after each page is a new annoyance, just in case anyone was wondering. It is less noticeable on the newest readers due to increased processing speed. If anything, the trend toward refreshing the screen only once in several pages is merely a marketing gimmick aimed at the non-techie masses.