I'm on S234. On my Hopper, one of the channels that I have in one of my favorites lists keeps disappearing from the Guide. When I edit the list and try to add it, it doesn't save it. If I un-select the channel next to it, then add both channels, it is saved - for some period of time, after which it is gone from the Guide again. I have that channel in another favorites list and it is fine. Kinda like my EHD. I have rebooted the hopper. I've had it for about a month but I just noticed this problem this past weekend.