I don't have my copy of Tiger yet, but I assume that it comes with the same nondisclosure agreement that Apple usually includes with pre-release software for developers. So if you have legal copy that means that you shouldn't be discussing it on this list or anywhere else public. Apple has recently been threatening to stop releasing early versions of the OS and by discussing it here you are only increasing the chances that they will do so. Phil - A Register Apple developer who doesn't want to loose his early access due to the loose lips of others.