I realise this is a minor issue, but just to raise that progress tracking / percentage complete is not quite right...
Example:
Say I have 10 files with 500 fragments each (5,000 total)
When Defraggler has defragged 9 of 10 files / 4,500 of 5,000 fragments
The percentage complete is generally around 50-65% (when it should be ~90%)
If this could be looked into that would be great... I often defrag files in sets of batches and it is slightly odd when Defraggler has been working on a batch for 15 mins, it says "50% complete" so I assume it will be done in another 15 minutes or so, but then Defraggler suddenly finishes within 1-2 minutes.
I never trust any 'percent complete' or 'time remaining' seen anywhere on a computer.
They are just 'best guesses' to give a rough indication - and often innacurate guesses.
Windows itself is prone to it.
A Windows Update will tell you '100% downloaded' but if you look at Task Manager you see that it's still downloading things, ofter for up to anoter 5 or 10 minutes.
Then it does the same with the install, it will say it's complete and you should restart, but if you look it's still beavering away.
(If you do restart then it just keeps beavering away after the restart).
'Time remaining's in any software (if they shown it) often suddenly change by a lot.
in the end they are all just best guesses and so shouldn't be relied on as more than a rough guide.
Once you realise that then you don't get annoyed when they are wrong, as they usually are.