The only problem people have had are people using the Final Cut Pro upgrade from 2.x to 3.0. They have needed to install Mac OS 9 to do the update and are outraged on Apple's discussion boards as Apple isn't including Mac OS 9 with Jaguar. At least Apple currently has an up-to-date program to purchase Mac OS 9 for those who don't already have it, and it is included on the restore CDs for those who purchase machines with Jaguar preinstalled, but how long is that going to last?
well, hoepfully the next updates to FCP, the big ones, will upgrade anywhere form 1.0 on up, but I sort of doubt it. This sucks for people who get a clean install everytime they update the system. 9's on its way out, so this could be a problem. What I'd like to see is a trade in progam. You would send in your disks and your liscences from previous generations, and they return you a full program at the current version. I wouldn't think this wuld make costs higher.