I ported the app in question from vs2003. The conversion process does not set up the vs2005 environment entirely. Additionally, conversion from my impression of the forums, has a habit of dropping modules and misconverting interfaces. In fact, I had to convert the project in question twice, because a module's interface was trashed. I am using the IIS for debugging, and the Response.Redirect will terminate a session, or start a second session, if there is disagreement with the IIS site name. I know that the session was terminated, in this instance. I am not sufficiently knowledgeable to know how this might have happened, but it could be due to the vs2005 project setup.
I will attempt to build an app in vs2003 that will exhibit this behavior, and put it up.