While I'm watching TV on my cable box that is hooked up to my slingbox 500, numerous times throughout the day the slingbox powers on, interrupting what I am currently watching. All of a sudden the Slingbox screen comes onto the TV and it says Slingbox is powering up, this may take a few minutes. This occurs completely randomly throughout the day, sometimes once an hour, sometimes every 10-20 minutes and sometimes it won't happen at all for several hours. Is this normal? I previously had my slingbox hooked up to a tv I did not use very often so I never really noticed whether or not this ever happened. Is there something I can do to prevent this from happening as it is quite frustrating to constantly have my program interrupted for several minutes at a time?