Did you ever connect to a an SQL server using Enterprise Manager where the server in question had a hundred or so databases installed? If you have you will know there is a significant delay when you expand the tree to find your database.
This KB Article from Microsoft includes a stored procedure that modifies the process of creating that browse list and shows the connecting EM only the databases they are entitled to see.
Article on ColdfusionMuse - Limiting the Databases Seen in MS SQL Enterprise Manager
Microsoft Knowledge Base Article