I received 0x0744 on 10/9/13, on my HR44-500. Since then I have one problem that has occurred many times. While viewing a recorded show, the picture and sound freeze almost like someone hit pause, but no status bar at the bottom. Hitting any button has no effect, but it does get queued up. The picture and the sound stop for about 30 seconds and then start again. If I hit any buttons on the remote while it is stopped, they will be remembered and acted upon at the end of the 30 seconds.
I only had my HR44 for a short time before 744 was loaded, but I never had this problem on 740 or 741. This problem is very intermittent and only occurs about once in 8 hours of viewing. Anyone else having this problem?