Hi... I've seen some other posts on this topic but I haven't found one that tells me why the following is happening... I have an HR20 that I've had for several years... For maybe the past 6 months or so I've noted that the DVR is extremely slow to change channels and extremely slow to respond to channel numbers being input by the remote. I've read where others seem to have the same problems with other, newer models of DVR's... But I haven't heard any explanations about the WHY!!! Can anyone say why this might be happening, a technical explanation of what might be going on??? Any help would be much appreciated... thanks... bob..