Isn't that the Cinavia protection?...Even if you copy the BD using a paid ripper you run the risk of the new BD encryption that, after @20 minutes, drops the audio and posts a message on your screen that you're viewing a 'copy'.
I think if the rip is re-encoded Cinavia will be gone. Of course, re-encoding means picture/audio quality will not be original... Whether or not someone can tell the difference (or cares that much about it) is another matter....That is why I brought up about DVDFab and AnyDVD. I use both and I rip my Blurays with out the problem you stated. I rip to the best quality possible and only remove the extra bits... Trailers, menu etc. So are you saying it is only if ripped to a Blueray disc and not ripped to a HDD? Why would it make a difference whether it was a HDD or a Blueray disc?