Whenever I stop debugging an ASP.NET IIS web application it seems to take very long before VS2010 becomes responsive again (2 or 3 minutes). This happens when I close Internet Explorer 9 (which stops the debugging session), stop debugging in VS (which closes the browser) or when I detach the debugger from the debugging menu (which leaves the browser open).
My CPU time for devenv.exe goes up to 25% during this period of time. I use the professional edition (no intellitrace). Starting without debugging performs ok when I close the browser. I have some add-ins and extensions installed like TestDriven.NET, Resharper, PowerCommands, Productivity Power Tools, VisualSVN,...
Any ideas what causes this annoying problem? Things I can try and disable?
You need to narrow it down by running Visual Studio in safe mode. This will disable all 3rd-party extensions.
If the problem goes away, then it's a problem in one of your extensions. Try enabling them one at a time.
If the problem doesn't go away, then it's a problem with VS2010. File a bug on Connect. Also, try the pre-release VS2010 SP1 to see if it's already fixed.