Mine does the same thing. If I cancel, the screen freezes and stays there even when I turn off the power button. If I leave it off for 10-15 seconds and turn it back on, the screen goes to normal, but I lose part of the recording. A hard reboot will fix everything until the next time. My thinking is that the 921 (one of the first one's out before they stopped shipping way back when) is getting old. Any suggestions?