SQL Server Full-Text Search service can affect the performance of SQL Server (2005 & 2008) when it is indexing text in tables. Indexing large amounts of text uses up server resources, reducing the CPU time and memory that could be used by your users running their SQL Server-based applications.
Microsoft Defect
Cumulative Update 9 for SQL Server 2008 Service Pack 1. For more information about this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2083921 (https://support.microsoft.com/en-us/kb/2083921 ) cumulative update 9 for SQL Server 2008 Service Pack 1
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https://support.microsoft.com/en-gb/kb/982854