Twice in the last week my 622 running L627 has displayed odd behavior. On both occasions, a program was in the process of recording with the TV set off. When I turned on the TV, the program that was recording did not display audio or video but did display closed caption info. Program guide was available as was the DVR menu. However, I could not select either a live program or anything previously recorded - the CC from the original program continued to be displayed. After reboot, the program that was being recorded was available with no glitches and all other behavior returned to normal. Anyone else seen anything similar? I hope this isn't a precursor to hard disk failure.