As the hard drive in your computer may be badly fragmented in the course of time, it would eventually cause negative problems, such as system slowdown and program crashing. QuuSoft Disk Defrag will help you puts these fragments back together sequentially so that your hard drive doesn't have to go bouncing all over the place to get those files. The results are faster file access, loading of programs etc. It does make a difference if you have got used to work and play with a fast and smooth system. It also helps prevent premature drive problems and retrieve the data in the event of a drive crash.