Hmm... interesting bit on libdvdread.
I think libdvdread is compiled into the xine I have installed on my computer (Slackware 12's xine). The only extra thing I had to install was libdvdcss of course.
I only mention libdvdread because that's what's mentioned on the terminal when I have a problem.
libdvdread: can't seek....
something like that. But I guess it could be a problem with something else but libdvdread is the one that reports the error.
I just don't know if TWBB is more powerfully encoded that it's out of spec? or if TWBB is just a bad disc? Or perhaps I have a bad drive.