48GB sounds like a lot - unless you only have a few massive tables in the database. Don't forget too that sp_spaceused (if that is what you used to determine free space) doesn't maintain accurate numbers. The usual culprit for failure-to-defrag is not having sufficient free space (usually due to poor size/growth increment control) in the database. Hopefully you DO have a bug and it simply hasn't been doing anything. :hehe: