Hello, I have a MBP that has run fine up until a few weeks ago. I had updated the os x with mavericks. I started having issues with the spinning beach ball when i tried to do just about anything. Then the boot time last anywhere from 5-10minutes. It got to the point where I could not do anything without it freezing up. I was able to backup all my data on a external hard drive. I then erased the drive and tried to revert back to the original OS Mountain Lion. When I go to install Mountain Lion is telling me 4 + hrs to install and freezes up. Could this mean the hard drive is done? Any other steps that I should take? Thanks for the help