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.
This problem can sometimes be caused by disabling or refusing to accept
Please update to Firefox 25.0.1 and try again. Update Firefox to the latest version
updated from 25.0.1 to 26 still having the problem
This can be caused by corrupted cookies or cookies that are blocked (check the permissions on the aboutermissions page).
Clear the cache and cookies only from websites that cause problems.
"Clear the Cache":
"Remove Cookies" from sites causing problems: