One of my premieres constantly reboots. I don't think it's a software issue because my other unit is just fine. Both are connected via MoCa. It reboots even when I am not actually using it. Many times it happens in the middle of recording and I have noticed it reboot even when nothing is recording and the TV is turned off. Is it probably the hard drive? It's the newer unit of the two so I am very disappointed. It's only about 18 months old. Could it be something besides the hard drive?