Disk Defragmentation

Disk defragmentation will keep you computer running fast without problems. The purpose is to reorganize the data on your hard drive to give you more space. If you notice your computer slowing down, you may need to defrag it. Data is strewn all over, and defragging your computer will put the data in order so the computer doesn’t have to search as hard to find the information. When you delete a file from your computer, you leave an empty space between files on the hard drive. These empty spaces, in between programs, make your computer work harder. When you get messages on your computer, saying that you’re running out of memory; then, a monthly defragmentation is necessary. This is an article that everyone should read.
 http://www.reverseages.com/blog/2009/12/21/disk-defragmentation.html