Here is an odd one. About once I day or so, I have to reboot the DVR because I loose the ability to select a channel from the guide and select "OK". It doesn't do anything. And if I try to put in a channel number and "OK", nothing. If I do not reboot, the only way I can change channels is through the up-and-down buttons. Otherwise I love the box.
Run the tool to check out your box. Menu, customer support, top support tools, Fix Fios Tv Issues. It does more then simply pulling power and restarting it does.