I have a white MacBook that I bought in very early 2007. I love the thing. It's my work horse computer but it has given me problems. About 2 months after my warranty expired, the hard drive crapped out. If I tried to install any large programs like Photoshop, the computer would crash basically. So, I bought a new external hard drive and all was fine (Western Digitial 250GB HD). About a month ago, I noticed a folder I keep all of my schoolwork in was missing. I searched for it and it was gone. I restarted and then more files were missing. I quickly backed up what I could and reformatted. Now everything seems to be working fine. But I am leery of losing everything again. Also, just in case, I bought an external TB harddrive (seagate) to run Time Machine with. 2 days ago, Time Machine tries to run and the hard drive makes several large clicking sounds. Then the drive became inaccessible and is useless. It's still under warranty but the data is gone. Should I trust my internal harddrive? Should I buy a new one or is something else causing these problems? Thanks!