Defraggler, when performing a drive defrag, will move unfragmented files to the end of the drive and store them in a fragmented fashion. This happens even with drives that are not the system partition, have plenty of free space (>30%) and no files being modified/opened except by defraggler. With plenty of free disk space, why would defraggler ever move a unfragmented file (except to fill in/compact free spaces) and, if it decides to move it, why would it fragment the file when moving it? Shouldn't the number of fragmented files on a drive always go down and never increase? I have noticed problem this in every version of defraggler (1.12 thru 2.01) and on many PCs (running XP, 2003, 2008, 7) so I'm pretty sure it has to be the program and not my hardware/drives/OS/disk format.
Brian