Have 2 HR=20-700's and have had this issue from the 1st day of use. If I fast forward to live tv(as live as it gets). the sound stutters along with Pic freeze. If if just hit the back button as it stops.. It's annoying and I was lead to believe when I talked to D* they assured me that they were aware of this issue and working on a fix by the next major update. I got that info last week.