I am a fairly new user (maybe 2 months or so) and I am having a problem with 1 of my HD DVR boxes. I have the new 500GB box and so far it has reset on me 3 times. I am watching tv fine I hit the on demand button and either right away the box resets or the screen loads and as I am scrolling it then shuts off and resets. Also one time only I was in the on demand and I couldn't access anything and in using the troubleshooter on the tv I ended up having to reset the router and that fixed it. IS this what I have to look forward to with the box resetting periodically or is it a sign the box may be defective? In reading another post the box is in an entertainment unit but it has space all around it and a hole in the back for venting.