Have noticed the same thing over the last 2 weeks on a couple of our boxes. Especially the boxes freezing when in the guide. When that happens, none of the buttons on the remote function. As Cobra97 stated, the only solution is to unplug and reboot.
I can confirm what Rich97 is saying. In fact, the audio during the 3rd period of last night's St.Louis game was almost entirely gone, with nothing but clicks and pops with the occasional couple of seconds of normal audio. We were surfing all the othe...