I personally have always found this annoying when using Defraggler. However, whenever you defrag a drive with big (Really big! > 1GB) files, it reports an incorrect percent of completion. Like ~99% of my drive is defragmented, but once it gets to the 1GB file it stays at 99% for a very long time. Yes, I understand that defragging a big file takes a long time, but I personally think the percentage complete should be not based on how many files have been defragged, but how much more size wise needs to be defragged.
Not sure if it can be done, but for me, it would make things more accurate
