Need Assistance Locating Redirect Bug

This is a followup to an earlier message about a bug causing an infinite redirect in my Struts application. We integrate with Spring via action-servlet.xml. The following is the content of my index.jsp page (the only JSP not behind WEB-INF):

Diagnosing A Redirect Error

I am attempting to run a brank-new webapp, and finally managed to kill enough code bugs that no odd exceptions are showing up in the application logs. However, attempting to hit the main page, login.jsp, causes Firefox to tell me The page isn't redirecting properly: Firefox has detected that the