Tonight I turned on the HR44 it was fine and after a few minutes I switched over to Bell for about 40 minutes. After I switched back to the HR44 it was frozen on the channel it was on. I switched it to the local NBC which ran for about 4 mins then also froze. I did a clear my box and after it came back I noticed every second or third channel in the guide was grayed out. After another 10 minutes the channels lighted up in the guide again and all appears to be working again. I thought for a minute the HDD was failing. Good thing I was recently pondering adding a 3TB EHD soon.