[13-Jul-2013 08:51:53 UTC] PHP Notice: Undefined index: tooltip_audio in /home/.../public_html/wp-content/plugins/si-contact-form/admin/si-contact-form-admin.php on line 2615
Repeated in debug.log. Plugin last version updated.
I don't have Captcha nor any audio feature enabled.
Just a positive contribution...
And a humble suggestion: your plugin is one of the (few) really best. Please don`t overload it with unnecessary features. This may possibly affect you having to post updates as often.
Sobriety is a virtue. I believe that also in the art of cooking.
Seriously, thanks for your excellent work