Firefox - Redirect Loop

Every once in a while I encounter a Firefox error like, "Firefox has detected that the server is redirecting the request for this address in a way that will never complete." The thing is that I'm pretty well convinced that FF is dead wrong in its determination. Most of the Google commentary I could find deals with clearing caches, etc. I'm just wondering if anyone has figured out exactly what it is that causes FF to come to this conclusion and what we need to do in order to keep it from making such erroneous determinations.

Thanks for any input.

          ... doug