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Full user review
"Brilliant - if only all software were the same."
I've just added again to a new computer and it installed easily. It's a doddle to set up and just ticks away in the background. I run AVG PC TuneUp as well (another good program though not free) and although AVG constantly reports registry issues etc. never once has it reported a problem with defragmentation.
None - and I've been running this program on different computers (all Windows 7) for over a year. It's gradually replaced my paid (by Ashampoo) Defrag 3, though this too is a good (low cost) program.
It's free, it's brilliant, you shouldn't be without it.