Firefox has detected that the server is redirecting the request for this address in a way that will

I'm getting the message:

"Firefox has detected that the server is redirecting the request for this address in a way that will never complete."

Fir some reason my new blogs do not work when I try to map the domain (doesn't work in IE either). I am posting it here in this forum because the only difference I can detect between this blog and my previous ones is that this blog was created using the New Blog Templates plugin. This may not even be the cause.

How can I fix this?