Keep your system up to date with the most recent cumulative update package for SQL Server 2008 SP1. This package contains all of the SQL Server 2008 hotfixes that have been released since the initial release of SQL Server 2008 SP1.
CU#12 KB Article: http://support.microsoft.com/kb/2467236
Previous CU KB Articles:
Abhishek SinhaProgram ManagerSQL Server Sustained Engineering