I just erased and installed osx on my mbp, and Im wondering if that will do a complete clean installation. I just inserted the dvd, clicked install, then selected my hd then selected erase and install. I was hearing from somebody on this forum that you have to partition the whole drive to do a complete clean install. I just wanted to know because I like to have my osx as clean and fast as possible. also afterwards I was checking my speed on my apps opening and quickly tried to open alot of ilife programs. I opened mail, calendar, imovie, itunes and my itunes locked up. I had to restart the whole computer to get itunes working again. It only did that once but do you think there could be a problem with my osx. Doing and erase and install will put all my ilife programs back on and will look like how it did when I first got the computer, Correct?