HDN seems to have this problem a lot. Sometimes it affects the entire program, and sometimes not. Just last week I recorded some movie over there and by mistake I recorded it on two HR10's (same exact time). It was doing the 5-second thing, and I compared it to the other recording on the other HR10, and that one was fine

. About a half-hour later the original one was OK as well.
I used to watch Joan of Arcadia on HDN last year (maybe on HDNM) and it seemed to do it on every episode I recorded.
My theory is that something in the bitstream that is like a timestamp to the 30-second FFW thing is not being interpreted properly, but even if that theory is right, it doesn't help any of us much

.