Microsoft® Visual Studio® 2005 Service Pack 1

Microsoft has released a Service Pack for the Visual Studio 2005 products. Fixes in the Service Pack include stability, perfomance and security enhancements made in many areas of the product.

Additional info:
http://support.microsoft.com/?kbid=928957

Download:
http://www.microsoft.com/downloads/details.aspx?familyid=BB4A75AB-E2D4-4C96-B39D-37BAF6B5B1DC&displaylang=en