C# 2010 app call ssrs report with reportviewer control

Question

I am working with a c#.net 2010 web form application that calls a reportviewer control to
display selected reports ssrs (*.rdls) from the reportviewer.
The problem is, I believe that the wrong report server is being called since the rdls that are
displayed are old version of the rdl reports. However I do not know what other report server could be called unless it is on my own workstation. There is no other test report server to call.
I can not find what could be wrong by the debugging I am doing.
In the web.config file, <appSettings> <add key="ReportServerURL" value="http://testdev/ReportServer/"/>.

When I access the test report server, the url is the following:
http://testdev/Reports/Pages/Folder.aspx?ViewMode=List.
Thus can you suggest what I could try to see what is wrong and/or tell me, show me in code, and/or point to a url that will tell me what could be wrong?

When I stepped through the code, right up to the moment that the report server was called, the report server name was correct I am the only person that has used this test report server this last year Thus could there be a problem with a setting on the report server? If so, what could setting could be wrong and what should I change the setting to?