Is this a Sony DVD? I had one of these and when you tried to rip it with the usual tools, it just said something like "incompatible folder structure" or so.
But that was easily bypassed, I don't think we will see a new DVD protection, as it would easily be exploited again...
“The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.”
- Albert Camus