Just an FYI that we posted a note about troubleshooting database growth issues in SCCM over on our new ConfigurationMgr blog:

http://blogs.technet.com/configurationmgr/archive/2009/01/27/troubleshooting-database-growth-issues-in-configuration-manager-2007.aspx

Enjoy!

J.C. Hornbeck | Manageability Knowledge Engineer