Hey I'm relatively new to mac, about 2 years, I have a 12 inch powerbook 1ghz, works great with 10.3.9.... I know. But I keep hearing people tell me to do things to permissions and I don't know what they are. I update the system as often as it tells me to (I don't install everything) I was just wondering what to do for maintenance other than permissions...whatever that is. Sorry to sound so ignorant, I do a lot of techie/geeky stuff for work but its all windows. I'm crazy about apple and want to learn everything THANKS!