Btw Pasq, in config.inc.php do you have this set to anything...?
// Some servers require the []
[email protected][/] parameter to send email. Normally this is not
// the case so this should stay off. However, if you are not receiving email you can try turning this on.
$config['fifth_mail'] = "";
If yes, is it because you can't send emails otherwise? If you don't need this enabled, then try setting it to nothing like above and see if your errors go away.