http://msmvps.com/blogs/shane/archive/2008/06/20/list-size-reporting.aspxUpdated 7/27/08 - I realized the pictures didn't show up the first time. Have you ever used the feature Storage space allocation from the site collection administrator's menu? That is a pretty nice view of all of the document libraries in my siteenCommunityServer 2008.5 SP2 (Build: 40407.4157)