Hello everyone. I purchased a new mac and I love it. I've been a pc guy all this time and dont know why I didnt make the move sooner. I've got a few questions though. The first being maintenance. On windows i had system utilities and disk defragmentation and all that. How can i be assured the mac is running smoothly? is there a disk defrag? Do I need to do it? i just want to keep my mac running right like i used to do on my pc.