it does sound like a compatibility problem or that the pioneer dvd drive is defective. anyway, joliekiller, check out
http://dvd.ign.com as they have a section on incompatibilties for certain dvds & the players/drives. who knows, maybe there is a solution there for u that's not as drastic as BIOS flashing.
by the way, u can write in your problem as well. hope that helps. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />