How do I create a system message for a user's first failed login attempt? When using the core login block on the homepage, it appears that the failed login system message, "Sorry, unrecognized username or password. Have you forgotten your password?" is only presented to users on their second failed login attempt. The first time they fail, only the missing/incorrect username and/or password fields are highlighted. Is there any way of changing this default behaviour, so the system message is displayed on the first attempt, as well?
The error messages are always created when a user tries to login.

If the error message doesn't show, you must have a custom module, that removes the messages some how. Maybe via redirection or something similar.