Apple has a good article discussing exactly what permissions are, how to change them, and what to do when (note I didn't say 'if') something goes wrong:

Permissions and troubleshooting permissions issues.

If you know something has gone badly wrong with your permissions, you might want to go straight to this FAQ article

got feedback? got feedback?

Any feedback you provide is sent to the owner of this FAQ for possible incorporation and shown publically as well.

by JJ
last modified: 2003-12-20 16:55:36