I bought my MacBook 2 years ago. Problems started two weeks after the year long warranty ran out. In a matter of 2 months, the MacBook was freezing constantly, sometimes for several minutes working only for few seconds in between before freezing again. Mostly it kept freezing when I was typing, trying to use Skype, iTunes, iPhoto or Firefox (the only apps I ever really use..) It froze even if I had only one application open. I took the MacBook to Mac store but without much of an explanation, I was told that I probably needed a new hard drive. This I found hard to believe, considering that I had only had the computer for a year and a bit. So instead I started searching for help on internet. I dont understand much of computers and english isnt my first language, so this has been a rather difficult and frustrating journey. But basically, I've changed the computer's settings so that it never goes to sleep and generally I never turn the computer off. This helped for a little while but eventually the freezing got really bad again. After that I reformatted the hard drive and then the computer was working great for a while again but since I've downloaded few photos and a bit of music, I'm starting to get the wheel again. Just a while ago the computer kept freezing for 30 seconds every second minute, it kept doing this for about an hour. I felt like throwing the whole thing out of the window.. Im not sure what other information to tell you.. At the moment I'm using about 30GB out of 111GB on the hard drive, before reformatting I was using about 60GB. Can anyone explain why the spinning wheel happens so frequently and for such a long periods without any obvious reason? Is there realistically anything I can do or should I just give in and buy a new hard drive? (which I dont find too cheap to be honest) If I do this, should I get new OS as well? (have tiger at the moment) And how on earth will I prevent the same problem happening again? I feel rather desperate at the moment, so any help will be much obliged.