Thank you for your response, and I apologize, I should have elaborated more on that:
Yes, libdvdcss IS confirmed installed on the 2 MD's in question, as well as the Hybrid. It was installed prior to all this, and when this started happening, I made sure that it was the first thing installed on each reload / rebuild. It never did pretend to be installed when it wasn't, but I installed, uninstalled, and reinstalled on each. Manual install err's out with "already newest version". As well, we can WATCH encrypted DVD's on all 3, which pretty well determines it.
As these were the only 2 MD's I had DVD drives in, or in use at all, I also deleted all signs of the others, and ONLY have these 2 still in operation.
Honestly, I think it has something to do with the Hybrid. The Hybrid's system drive is 360G, normal install from DVD, and there is still over 200G available. As well, there is the RAID set of 1TB, that is the default place to save media. I've looked at directory ownership / permissions, and set the public folder on RAID as it was under /home (root:public), made sure that user_* are members of public, etc. I've rebooted the Hybrid a few times, reloaded router several times, and still no response from rip / copy buttons on the MD's...