为什么Visual Studio 2005需要这么长时间来更新我的VSMDI文件？

I am using a solution with many projects in Visual Studio 2005. Unfortunately we are using the testing tools. My problem is that a lot of the time when I open up Test Manager by double clicking on my VSMDI file to do some testing, I get the hourglass for at least 10 minutes while Microsoft's horrible code does god-knows-what, I guess trying to find new tests? Does anyone have a workaround for this?I am using a solution with many projects in Vis