When I look at the user space restrictions tab for a particular volume I
have several people that are listed as using negative space. I'm using
version 1.36h reading an nss volume on a 6.5 server. When I use NDIR with a
search by owner I'm also getting different sizes for some users.

I have tried purging and remounting the volume with no luck? Is there
another tool I can use to check ownership for all the files in the volume.