I've read elsewhere about the problem OS X "used" to have regarding scheduled maintenance not running due to your computer sleeping or being off at night.. Well, my brand new MacBook had this problem, so Apple hasn't fixed it. YES, I'm aware that I can go into a terminal and run some command to make those jobs runs, but COME ON!! I don't have my computer geek hat on. I'm at home, not at work. So, I've had this computer for a month now and only daily has run - not weekly or monthly. I've even tried leaving the computer on all night long and not letting it sleep for a few nights in a row. Doesn't help. Lame.