I have two HR24's, each with 2 TB drives. They have been seeing heavy duty during the Olympics, with HD recordings up to 12 hours in length. When I delete one of these large recordings, the DVR will "freeze" for up to approximately 60 seconds, i.e. become unresponsive to remote commands and, in some cases, freezing the live content. In every case, the DVR comes alive again if I am patient. I have not noticed such behavior before. Anyone know what is causing this?