I've heard a few times in the past that DVDs authored on standalones have flawed IFOs, causing issues searching the disc in some players (like my old Apex AD-1500). Why is this? It doesn't seem like it would be that hard for the manufacturers to fine-tune the authoring.

Also, is the searching problem still prevalent with newer players or is it pretty much gone with companies trying to ensure compatibility between their players and recorders?

Thanks.