John, I've found Norton's Speed Disk (part of Norton Utilities) to be a faster and more effective defragmenter than the one that comes with Windows. Some articles I've read in computer magazines agree with this. Apparently one thing it does is to look at how often each of your applications is used and then position them on the disk to maximize the speed and efficiency of loading them. And as long as I turn off my screensaver it doesn't seem to get stuck in the "restarting" loops like the Windows defragmenter does. Besides, I like all the pretty colors on the graphic!

Aloha,
Mark