cookies not found in codeignitor

I set a cookie with javascript and read it back on the next line, and then it's gone. Is codeignitor messing with cookies somehow? I have tried using the cookie helper and also reading the cookies the old fashioned PHP way, but the cookie cannot be found. Are there any settings I should check other than those I have listed? Also, checking the log I see this: Global POST, GET and COOKIE data sanitized ... what does that mean?

Code:

$config['cookie_prefix'] = '';
$config['cookie_domain'] = '';
$config['cookie_path'] = '/';
$config['cookie_secure'] = FALSE;
$config['cookie_httponly'] = FALSE;