Hey all, I just got my macbook pro 4 days ago, this is my first mac, and I experienced a problem with it. I woke it out of sleep with a bunch of programs running to find the colored ring spinning for a minute or two. I didn't know what else to do so I held down the power button and turned the machine off. I then turned it back on to find a flashing folder with a ?. I put in the installation cd and called apple support. (customer service was great) They told me to go to the disk utility, and the Mac HD wasn't showing up anywhere. They told me I would need a repair or exchange so I said I wanted a brand new system. After I got off the phone I turned the machine off and on again and the system boot up normally. So now I'm getting a replacement, is that a good idea or should I call back? I figure if this went wrong once it might happen again.