Things have been going great with my 612VIP.  But then a problem popped up.  Picture freezes for a second and then starts again.  When I rewind DVR it's still there at the same moment as when I watched it on live TV.  Did a reboot and the problem went away.  But the next day same problem.  Haven't called Dish yet, but my hand's on the phone.  Anyone else have this problem?