I had recently installed Diskeeper Pro Premier 2009 on a 32bit installation of Vista Ultimate, but set it for manual rather than automatic defragmentation because I felt that it was interfering in normal operation. Since then, I have installed Vista Ultimate 64bit and re-installed Diskeeper 2009.
I have to tell you that it works very well indeed, and is not noticeable when set for auto operation. A few minutes ago, I opened Diskeeper in order to do a manual defrag, and none of my drives and partitions needed doing. It doesn’t get any better than that. Version 2009 is without a doubt the best yet.
There is no more.. that’s it. Go try it for yourself.. http://www.diskeeper.com/