ASP.NET Debugging Stop Unexpectedly

My environment: Visual Studio 2008 (VS.NET), Vista, IIS7, ASP.NET. 
I have a situation when I’m debugging ASP.NET and after about 90 seconds of stepping through code the debugger suddenly stops and detaches.
Based on info from others, it seems that the underling problem is Vista and Internet Information Server 7 (IIS7).  There are two setting in IIS7 for Application Pools that can create this problem: Ping Enabled and Ping Maximum Response Time.  The default for Ping Maximum Response Time is 90 sec.  By changing these values should resolve the problem.  The references below probably provides a better overview of the problem.
My web application times out when debugging in IIS7

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