I have a DVR-510 and a 301 receiver. Both units exhibit the same problem which leads me to believe it must the incoming signal. While watching a show, it will periodically skip 2-3 seconds, no noticeable signal loss, just skips ahead with both audio and video. The timing varies, sometimes it won't happen at all, other times 3-4 times in a 1 hr show. Just enough to get on your nerves. It's been doing this since we got it about 9 months ago. On a side note, I just upgraded my surround sound and sometimes the audio will distort terribly. Again it varies and I didn't notice it with the old system but it only happens through satellite. If I play a DVD or CD, everything seems fine so far. Could these two problems be related? We are using a Dish 500 system and under dish installation to check signal strength; It shows red and wrong satellite for about 5 seconds then goes green and says locked for both satellites. Strength is 106 on sat. 110 and 118 on sat. 119. Would this be normal operation? Any ideas? Any help is appreciated. Thanks.