I only use SuperDuper! http://www.shirt-pocket.com/SuperDuper/SuperDuperDescription.html to do a daily backup. It is more stable of a backup and never misses anything like how Carbon Copy Cloner did when I used it. This program seems to have a lot more features than just backing up. It can repair permissions too. If you register you can even run scripts and do a smart backup. I don't need to register though; all I need it for is a daily hard drive backup. I run it every day before going to sleep. It backs up my data and repairs my permissions with one click of the mouse. Great deal for free if you ask me.