If you are consulting, bring 'em up to SP3/3a and verify you can turn cross-database ownership chaining off. One of the probs with adjusting the public permissions is it leaves the SQL Server in a non-supported state. Yukon deals with this a whole lot better.
K. Brian Kelley, GSEC
http://www.truthsolutions.com/
Author: Start to Finish Guide to SQL Server Performance Monitoring
K. Brian Kelley
@kbriankelley