Keep your system up to date with the most recent cumulative update package for SQL Server 2008 RTM. This package contains all of the SQL Server 2008 hotfixes that have been released since the initial release of SQL Server 2008 RTM.
o Understanding Incremental Servicing Model for SQL Server
o CU#7 KB Article: http://support.microsoft.com/kb/973601/en-us
o SQL Server Support Information: http://support.microsoft.com/sql2005
Previous CU KB Articles:
Samantha SmithRelease Program ManagerSQL Server Sustained Engineering