I just switched from cable to Dish Net and it seems I am having a simular problem. I have the VIP 722 in one room and the 612 in the other. The problem is with the 612. I switched from the RCA cables to HDMI to my new Phillips. My problem is the 612 is always freezing up. I will hit my remote and sometimes the 612 will freeze or it will take two to three mins for the channell to change. then sometimes it will work normally for awhile say two hours or so.. Any ideas on this problem???????