I just noticed this. All files in my "/" (root) directory are visible after upgrade to 10.5 . Its fresh install. Now when I go to my computer's HDD root level, I see all the hidden directory and files there , like etc, usr, var, private etc. etc. I tried repairing disk permission. It's still the same. I know OS X has a file somewhere which lists all the files/folder which need to be hidden at root level. Do anyone know if its same method used in 10.5 ? It's nothing bad in terms of functionality but just little irritating to see all those directory there which I am not used to !