When watching live TV, or recordings, sometimes the program stops, stutters or jumps. It can stop for quite a few seconds, then jump a little, then stop then jump and do this a few times (sometimes with an overall time of 10 seconds, sometimes maybe 5 minutes) then play as normal.
Seems that it is in the recording, as replaying the same program always gets the same problem.
I previously had this problem and Virgin replaced the box. This is massively inconvenient as Virgin didn't tell me how to back up season passes, or settings and all recordings were lost. The problem started occurring again pretty quickly. However we can sometimes watch hours of TV without an issue, so it is not always a problem.
I can't find any other users reporting this so I'm thinking maybe it is something to do with a connection to the box. It has the cable internet inbound, is connected to the TV via HDMI and I use the SCART out into a converter to normal RF to feed a TV elsewhere in the house.