My biggest problem with my HR20 is the frequent lock ups. They mainly occur while I'm watching a recorded or live Mpeg 2 program. The DVR will lock up and the audio and video will continue playing. The DVR will accept no commands from the remote or by manually hitting buttons on the front of the DVR. Only way out is red button reset. This is also my second DVR and personally think it's a software problem that hopefully will be resolved in the near future with a software upgrade. I'm running an HDMI cable from my DVR to my t.v. and and optical cable from my DVR to my audio reciever. Does anyone think it's worth a try to switch to component cables to see if it resolves the lockups? Has anyone had luck with switching to component. Appreciate the comments. Thx.