Some of the more recent copy protection schemes will cause older versions of Fab (and other rippers) to fail. The "bad order" of chapters is indicative of this. Often the software will see something akin to continuos looping so that the disc size inflates to something on the order of 50-60 GB...or so the ripper thinks.
It is advisable to stay current with ripping software as this is a constantly evolving war...both for the enemies and allies alike...
I'll bet if you do a search on some of your "problem" titles, you'll find some hits.