When I start debugging my web application either from Start with Debugging (F5) or attaching to the ASP.NET worker process it will load the assemblies from the application v
I had this same problem, though this solution didn't do it for me. In the end, I had to go into Tools->Options->Debugging->Symbols and uncheck the Symbol file (.pdb) locations as well as click the Empty Symbol Cache button. After that, debugging was much nicer.