I've noticed the bottom right corners of my Hoppers getting very hot. What I haven't noticed is the sound of any fans kicking on. Do these have internal fans? One of my Hoppers is in a cabinet-style TV stand where the glass doors close and it is getting much hotter than the other Hopper which is on a TV cart with no back or front blocking airflow. The Joey tied to the Hopper in the cabinet just froze while watching TV. The Joey was turned off then back on, but after about 5 minutes it wouldn't connect to its Hopper. I opened the cabinet door to the Hopper and moments later the Joey connected. Perhaps the opening of the cabinet and the Joey connecting was just a coincidence. Any others experiencing hot temps on Hoppers or freezing Joeys? P.S. A 722k was in the same cabinet stand for years with no problems.