It is quite likely heavily based on the Diskeeper version but all the improvements that are added to it are now done by MS themselves.Originally posted by: martensite
Originally posted by: Nothinman
Yea, it's still licensed from Executive Software IIRC.
I dont think Vista's defragger is a Diskeeper version. I remember reading elsewhere that it was written from scratch by Microsoft themselves, but I am not 100% sure on this, so it's not reliable info.