After upgrading WordPress 2.02 to 2.5 version hosted in Yahoo, the following error appeared while trying to access my blog.
The page isn’t redirecting properly
Firefox has detected that the server is redirecting the request for this address in a way that will never complete.
And this got resolved after installing the disable canonical redirects plugin
Plugin Name: Disable Canonical URL Redirection
Description: Disables the "Canonical URL Redirect" features of WordPress 2.3 and above.
Author: Mark Jaquith
Author URI: http://markjaquith.com/