Microsoft Baseline Security Analyser 2.1

Hi

I downloaded MBSA and ran it against my SQL 2005 Server. It tells me that I have a severe risk because

'The following databases have public access.Remove the public access if it is not required - tempdb , model , msdb , ReportServer , ReportServerTempDB'

I have checked these databases and each have the Guest User but it is disabled. If I check the database properties the public role has no permissions against the listed databases.

Is this a bug with MBSA? If not how do I remove Public Access?

[536 byte] By [EwanWalker] at [2008-1-10]