The new Yahoo Mail does not support Firefox officially, but it works. You just need to select the link go to new Yahoo Mail. Mozilla can't do anything about this, it's a Yahoo charge make its website work and not give that message.
-- I can not log in my yahoo account with Firefox, Firefox is not supported by yahoo https://bugs.launchpad.net/bugs/388069 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs