I found a bug in Visual Studio 2008 SP 1 when I installed it on my VS 2008. Basically the problem is when you install VS 2008 SP 1 its override the setting of your Visual Studio 2008 and set to default setting.
Solution:
The solution of this problem is very simple you first export the setting of Visual Studio 2008 from Tools-> Imports and Exports Setting and save it on your desire location. Install the Visual Studio 2008 SP1 on VS 2008 and imports the setting again into VS 2008.