While Chris and Paul may have been the first to post about the DAOS estimator, and people may be downloading the files to see how much space they can save, I saw that there has been an updated download made available that if you were one of the early downloaders, you may have been noticing "issues" with the program.  If you downloaded the estimator tool before 12:45 AM on January 21, you'll want to download it again from the link below.

 Download the Domino Attachment and Object Service Estimator tool