Major form validation error messaging troubles

[eluser]jmadsen[/eluser]
is_unique[users.email]

doesn't belong in a login function. it is saying, "the email you passed is already in the database, so you can't use it". if you look in the source code you'll understand better what it is doing

this would be appropriate for a registration form.

(BTW - this section is for asking about possible bugs in the CI framework, not troubleshooting your own code. please use the "Code" area for this)