I'm fairly new to OSX. I haven't encountered any major trouble yet. The ones I have, have mainly been due to me trying to learn the ropes. Anyway, I look through the web and various forums now and then for hints and help. Seemingly a universal part of any OSX advise is to "repair permissions". I understand what that does. And I also understand how it can be important. What I don't understand is why doesn't a/my Mac do a permissions check automatically at evry start-up or once a week/month (considering how important it seems to be)?