Ive read tons of threads about system prefs not remembering things and i am still yet to find something that fixes this problem. When i restart, or shut down and reboot, once i enter my password system prefs wont remember a single thing. not my default browser, not the size of my dock or my background. it takes all the songs out of my itunes and forgets all the passwords to my accounts online. it removes icons from my dock for example i added firefox to the computer and when i restart firefox is in the app folder but the icon wont stay on the dock. this is driving me insane. ive repaired permissions countless times. someone please help!